September

«	September					»
1	2	3	4	5	6	7
8	9	10	11	12	13	14
15	16	17	18	19	20	21
22	23	24	25	26	27	28
29	30

September is the ninth month of the year in the Gregorian calendar. The following events took place in the month of September:

September 1

• 1952 — Rodolfo Bianchi (Italian voice of Age of Extinction Lockdown) is born.
• 1954 — Musician Ric Formosa is born.
• 1960 — Akio Kato (Japanese voice of Bumblebee) is born.
• 1961 — Heikki Kujanpää (Finnish voice of Starscream) is born.
• 1962 — Writer Scott Ciencin is born.
• 1965 — Viktor Pavel (German voice of Optimus Prime and Thrash in Transformers: EarthSpark - Expedition) is born
• 1967 — Daniel Abundis (Mexican voice of Beast Machines Rattrap) is born.
• 1968 — Atsuko Yuya (Japanese voice of Arcee in The Rebirth) is born.
• 1969 — Patrick Giese (German voice of Ironhide in Transformers: War for Cybertron Trilogy) is born.
• 1970 — Akimitsu Takase (Japanese voice of Hot Rod and more) is born.
• 1971 — Dave Wittenberg (voice of Mirage in Dark of the Moon: The Game and Wildbreak in Robots in Disguise) is born.
• 1975 — Kunihiro Kawamoto (voice of Robotmasters Starscream and Japanese voice of Ron) is born.
• 1981 — Michael Adamthwaite (voice of Lugnutz) is born.
• 1983 — Japanese channel TV Aichi begins its first broadcast.
• 1988 — Canadian channel YTV begins its first broadcast.
• 1990 — Art director Luca Centofanti is born.
• 1991 — The Victory episode "Battle on the Planet Miclot" premieres in Malaysia.
• 1993 — Teppei Uenishi (voice of Lightlong) is born.
• 1999 — The Beast Wars Neo episode "Unicron's Ambition" premieres in Japan.
• 1999 — Humber Mirabal (Venezuelan voice of all the male characters in Transformers One: New Adventures) is born.
• 2003 — Transformers: Armada Official Guidebook is published in the US by Reader's Digest.
• 2003 — The Transformers Armada Annual 2004 is published in the UK by Pedigree Books.
• 2004 — The "Black Rodimus Convoy" exclusive mail-away offer begins through TV Magazine in Japan.
• 2004 — Transformers Energon #27 is released by Dreamwave Productions.
• 2007 — Takara releases Masterpiece MP-6 Skywarp.
• 2008 — Transformers Animated Annual 2009 is published in the UK by HarperCollins.
• 2008 — Manfred Schmidt (German voice of Sky Lynx, Metroplex and others) dies.
• 2008 — The Animated episode "Transform and Roll Out Part 3" premieres in France.
• 2009 — The Transformers—More than Meets the Eye is released on DVD in the US by Shout! Factory.
• 2010 — The Last Stand of the Wreckers TPB is released by IDW Publishing.
• 2010 — Gino Donato (Italian voice of Megatron) dies at age 83.
• 2011 — The Transformers Dark of the Moon Annual 2012 is released in the UK by HarperCollins
• 2012 — The Super Robot Lifeform Transformers: Prime episode "Forbidden Transformation!? Ratchet's Strongest Legend?" premieres in Japan.
• 2014 — Antônio Patiño (Brazilian voice of Jazz, Cyclonus, Autobot X and more) passes away at age 84.
• 2015 — The Robots in Disguise book Drift's Samurai Showdown hits bookstores.
• 2015 — Transformers: Robots in Disguise Volume 1 Collect 'em All is released on DVD in Australia by Beyond Home Entertainment. Beyond also releases Transformers: Robots in Disguise: Complete Season One on DVD in Australia as an exclusive to home electronics retailer JB HiFi.
• 2015 — The Robots in Disguise episode "Out of Focus" premieres in Brazil.
• 2018 — Transformers: Cyberverse makes its television premiere on Cartoon Network with the episode "Fractured".
• 2019 — The Siege Refraktor Reconnaissance Team 3-Pack ships from Hasbro Pulse.
• 2019 — The Cyberverse episodes "Parley" and "Starscream's Children" premiere in Australia and New Zealand.
• 2021 — Transformers #34 and King Grimlock #2 are released by IDW Publishing.
• 2022 — Transformers Beyond Reality is released for PlayStation VR.
• 2023 — The Transformers: EarthSpark episode "Bear Necessities" premieres in Canada on YTV.
• 2024 — The EarthSpark episode "Gather! Autobots!" premieres in Japan.

September 2

• 1942 — Hartmut Neugebauer (German voice of Transformers: The Last Knight Hound) is born.
• 1945 — World War II ends.
• 1945 — Christian Pelissier (French voice of Long Haul and Sideways in the Revenge of the Fallen videogame) is born.
• 1958 — Eduardo Fonseca (Mexican voice of Thunderhoof) is born.
• 1961 — Miyoko Aoba (voice of Clipper) is born.
• 1962 — Artur Kaczmarski (Polish voice of Denny Clay) is born.
• 1974 — Jan-David Rönfeldt (German voice of Transformers One D-16/Megatron) is born
• 1976 — Tatjana Pokorny (German voice of Kelly Bomgartner) is born.
• 1990 — The Super-God Masterforce episode "The Hunt has Begun" premieres in Malaysia.
• 1998 — The Beast Wars II episode "Showdown in the Sea" premieres in Japan.
• 2000 — The Beast Machines episode "In Darkest Knight" premieres in the U.S. on Fox Kids.
• 2005 — The "Director's Cut" of the Transformers PlayStation 2 game by Melbourne House is released in the UK.
• 2008 — Transformers is released on Blu-ray disc in the US.
• 2009 — Best of UK: Prey #2 is released by IDW Publishing.
• 2010 — The Transformers Annual 2011 is released in the UK by HarperCollins.
• 2013 — The Transformers: Prime episode "Darkmount, NV" premieres in Hungary.
• 2013 — Transformers Prime — Season One: Unlikely Alliances are released to home media in the United Kingdom by Universal Pictures UK.
• 2014 — The Beast Machines: Complete Series DVD set is released in the US by Shout! Factory.
• 2014 — The Transformers: Rescue Bots: "Mystery Rescue" compilation DVD is released in the US by Shout! Factory.
• 2014 — Daniel Dicenta (Castillian Spanish voice of Inferno) passes away.
• 2015 — More than Meets the Eye #44 is released by IDW Publishing.
• 2016 — Actor John Hostetter (Ramhorn on The Transformers) dies of cancer at age 69.
• 2016 — First day of the Angry Birds Transformers mobile game's "Ride of the Valkyries" Challenge Event.
• 2016 — "Trigger Warnings" is released by Fun Publications.
• 2017 — The Robots in Disguise episode "Moon Breaker" premieres on Cartoon Network in the U.S.
• 2018 — Generation 1 cartoon composer Robert J. Walsh dies at age 70.
• 2020 — Galaxies #9, Secrets & Lies #3, and My Little Pony/Transformers: Friendship in Disguise! #2 are released by IDW Publishing.
• 2021 — Horst Lampe (German voice actor of Animated Ratchet, Revenge of the Fallen Soundwave and Cyberverse Shockwave) dies at age 84.
• 2023 — The Transformers: EarthSpark episode "Warzone" premieres in Hungary.

September 3

• 1956 — Writer Ian Weir is born.
• 1958 — Composer Kevin Kiner is born.
• 1967 — Voice actor Valerio Sacco is born.
• 1968 — Jorge Roig Jr. (Mexican voice of Dr. Powell) is born.
• 1968 — Ênio Vivona (Brazilian voice of Grimlock and the AllSpark) is born.
• 1970 — Comic inker Aaron Leach is born.
• 1971 — Kristi Reed (Voice director of Transformers: EarthSpark) is born.
• 1972 — Junji Sanechika (voice of Beast Wars II Thrust/Thrustor) is born.
• 1983 — Eko Fresh (German voice of Cheetor) is born.
• 1988 — Transformers #182 - "Space Pirates! Part 1" is released in the UK by Marvel Comics.
• 1994 — The Transformers: Generation Two episode "Starscream's Brigade" premieres in Germany.
• 1995 — AuctionWeb which would later become eBay is founded.
• 2004 — The Super Link episode "Ancient Sage—Omega Supreme" premieres in Japan.
• 2004 — The Energon episode "Each One Fights..." premieres in the U.S.
• 2005 — The Galaxy Force episode "Atlantis' Labyrinth" premieres in Japan.
• 2005 — The Cybertron episode "Ship" airs in the U.S.
• 2007 — The Complete Takara Collection box set is released on DVD in the UK by Metrodome.
• 2007 — Transformers Annual 2008 is published in the UK by HarperCollins Publishers.
• 2008 — The Animated episode "Home Is Where the Spark Is" premieres in France.
• 2009 — Transformers Animated—Volume Five: Fistful of Energon is released in Australia by Paramount Pictures.
• 2009 — Transformers Revenge of the Fallen Annual 2010 is published in the UK by HarperCollins Publishers.
• 2009 — Transformers Animated — Volume Five: Fistful of Energon is released in Australia by Paramount.
• 2012 — The Transformers: Prime episode Darkness Rising, Part 1 premieres in Indonesia.
• 2013 — Transformers: Prime Beast Hunters Dawn of the Beast is released by Shout! Factory
• 2013 — The Transformers: Prime episode "Scattered" premieres in Hungary.
• 2014 — The IDW Collection Phase Two: Volume 1 is released by IDW Publishing.
• 2016 — The Rescue Bots episode "Once Upon a Time" premieres on Discovery Family.
• 2017 — Deco artist Alex Androski dies at age 29.
• 2020 — Jean-François Poron (French voice of Optimus Prime in The Transformers: The Movie) dies at the age of 84 from a lung infection.
• 2023 — The Transformers: EarthSpark episode "Home, Part 1" premieres in Hungary.
• 2023 — The Beast Wars Again episode "Fare Thee Well, Tigatron (Part 1)" airs on TV Tokyo.
• 2024 — Transformers Hall of Fame voting for 2024 begins.

September 4

• 1953 — Vittorio Bestoso (Italian voice of Cyberverse Alpha Trion and Flamesnort) is born.
• 1955 — Sayuri Sadaoka (Japanese voice of Charlotte Mearing) is born.
• 1961 — Writer Mark Leiren-Young is born.
• 1968 — John DiMaggio (voice of Crosshairs, Leadfoot, Nitro Zeus, Sideways, and many more) invites the world to bite his shiny metal ass as he is born.
• 1973 — Jason David Frank (voice of Emissary) is born with the power of the Dragonzord. It's Morphin' time!
• 1976 — Jun Fukushima (voice of Wheeljack in Mystery of Convoy Returns) is born and yearns for true gender equality.
• 1977 — Przemysław Glapiński (Polish voice of Orion Pax/Optimus Prime) is born.
• 1987 — The Headmasters episodes "Terror! The Six Shadows" and "Cybertron Is in Grave Danger, Part 1" premiere in Japan.
• 2003 — More than Meets the Eye #5 and Transformers/G.I. Joe #1 are released by Dreamwave Productions.
• 2004 — The Energon episodes "Unicron Unleashed", "Open Fire!", "Ripped Up Space", and "Team Optimus Prime" premiere in the U.S.
• 2006 — The 23rd show in the Kiss Players radio drama series airs in Japan on the "Lyrian Moe-tchao" program.
• 2006 — Transformers — The Complete Generation One Collection is released on DVD in the UK by Metrodome.
• 2008 — Animated — Volume One: Blast from the Past is released in Australia by Paramount.
• 2008 — Best of UK: Time Wars #2 and Saga of the Allspark #3 are released by IDW Publishing.
• 2010 — The Animated episode "Double Agent" premieres in Japan.
• 2012 — Autobots versus Zombies is released by Little, Brown and Company.
• 2012 — The Prime episode "Darkness Rising, Part 2" premieres in Indonesia.
• 2013 — The Prime episode "Prey" premieres in Hungary.
• 2014 — Ted Schwartz (initial voice of Rodimus Prime and voice of Tailgate) dies at age 80.
• 2016 — The Robots in Disguise episode "Impounded" premieres in Japan.
• 2017 — Robots in Disguise — The Champ & Optimus Returns are released on home video by Primal Screen.
• 2019 — Transformers: The Definitive G1 Collection Volume 77: Dissolution is released by Hachette Partworks.
• 2019 — Transformers/Ghostbusters #4 is released by IDW Publishing.
• 2024 — Scarlett #4 and Void Rivals Volume 2: Hunted Across the Wasteland TPB are released by Image Comics and Skybound Entertainment.
• 2024 — Studio Series One Bumblebee/B-127 & Elita-1 are officially revealed.

September 5

• 1952 — Michael Horton (voice of Chip Chase) is born with courage!
• 1967 — Christin Marquitan (German voice of Blackarachnia) is born.
• 1977 — The Voyager 1 Spacecraft, carrying one of two Voyager golden records, leaves Earth.
• 1977 — Shūhei Sakaguchi (Japanese voice of Leo Spitz) is born.
• 1977 — Linda Bergkvist (Dreamwave Productions artist) is born.
• 1979 — Nick Roche, Transformers artist and writer extraordinaire, is born.
• 1982 — Domitilla D'Amico (Italian voice of Alexis Thi Dang and Elita) is born.
• 1983 — Chikahiro Kobayashi (Japanese voice of Glacius and Backtrack) is born.
• 1986 — The Fight! Super Robot Lifeform Transformers episode "The Revival of Bruticus" premieres in Japan.
• 1986 — Grzegorz Kwiecień (Polish voice of Wheeljack, Vince, Steeljaw and Butch) is born.
• 1989 — The Victory episode "Fight to the Death!! Antarctic Battle" premieres in Japan.
• 1990 — Max Mittelman (voice of Blurr) is born with just one punch.
• 1998 — The Beast Wars episode "Law of the Jungle" premieres in Germany.
• 2003 — The Legends of the Microns episode "救出 (かいほう) - rescue" premieres in Japan.
• 2003 — The Armada episode "Depart" premieres on YTV in Canada.
• 2005 — The Transformers: The Movie — Reconstructed is released on DVD in the UK by Metrodome.
• 2006 — The Cybertron episode "Darkness" premieres in the US.
• 2008 — Paramount Pictures offers to replace defective discs from the Transformers: Cybertron — The Ultimate Collection box set.
• 2011 — The Prime episode "Darkness Rising, Part 1" premieres in the UK on Cartoon Network and sister channel, Cartoon Network TOO.
• 2011 — The Transformers: Prime episode Darkness Rising, Part 3 premieres in South Korea.
• 2012 — The Transformers: Robots in Disguise #9 and The Transformers: Regeneration One #83 are released by IDW Publishing.
• 2012 — The Transformers: Prime episode Darkness Rising, Part 3 premieres in Indonesia.
• 2013 — Fun Publications reveals the fourth figure in the 2014 Figure Subscription Service: Rewind.
• 2013 — The Transformers: Prime episode "Rebellion" premieres in Hungary.
• 2015 — The Robots in Disguise episode "Battlegrounds, Part 1" premieres on Cartoon Network in the USA.
• 2018 — Optimus Prime #23, Lost Light #23, and Transformers: Unicron #4 are released by IDW Publishing.
• 2018 — Transformers: The Definitive G1 Collection: Volume 32: Infiltration is released by Hachette Partworks.
• 2020 — The Transformers: Cyberverse episode "Battle For Cybertron II" premieres in Germany.
• 2023 — TakaraTomy annouces that Transformers: EarthSpark will be getting a Japanese release.
• 2023 — First day to preorder the Transformers x Seiko Collaboration Limited G1 Transformers Autobot Watch.
• 2023 — Hasbro officially reveals the Transformers Collaborative Transformers x Universal Monsters Frankentron.
• 2025 — Preorders go up for the Missing Link C-10 Ultra Magnus (w/Deerstalker) and Dramatic Capture Series Decepticons Part 2 Skywarp and Insecticons (Kickback (G1), Shrapnel and Bombshell).

September 6

• 19?? — Shinji Uchida (voice of Drancron) is born.
• 1931 — Guillermo Romano (Latin American Spanish voice of Unicron and more) is born.
• 1958 — Ayhan Kahya (Turkish dub voice of Optimus Prime) is born.
• 1959 — Gaetano Varcasia (Italian voice of The Fallen in Transformers: Revenge of the Fallen) is born.
• 1967 — Bohdan Tůma (Cezch voice of Optimus Prime) is born.
• 1971 — Marcia Coutinho (Brazilian of Strongarm and Wingcode) is born.
• 1974 — Bebi Romeo (Indonesian voice of Optimus Prime) is born.
• 1976 — Robin Atkin Downes (voice of Prime #3, Thunderwing, Jacknab, Pilfer and Flamesnort) is born.
• 1984 — Carlo Vázquez (Mexican voice of Wheelie, Grimlock, Swindle and War for Cybertron Trilogy Unicron) is born.
• 1990 — Director Al Kouzel dies while undergoing cancer treatment.
• 1992 — The Headmasters episode "The Shadow of Evil" airs in Malaysia.
• 2000 — The Car Robots episode "Targeted Buildmasters" premieres in Japan.
• 2004 — The Energon cartoon premieres in the United Kingdom on Toonami.
• 2006 — The Cybertron cartoon episode "Memory" premieres in the US.
• 2006 — Stormbringer #3 and Generations #7 are released by IDW Publishing.
• 2007 — Megatron Origin #3 is released by IDW Publishing.
• 2008 — The Transformers Animated episode "Megatron Rising - Part 2" premieres in Latin America.
• 2008 — The Animated episodes "Total Meltdown" premieres in France.
• 2011 — The Prime episode "Darkness Rising, Part 2" premieres in the UK on Cartoon Network and sister channel, Cartoon Network TOO.
• 2011 — The Transformers: Prime episode Darkness Rising, Part 4 premieres in South Korea.
• 2013 — The entire third season of Transformers: Prime premieres in Italy.
• 2013 — The Transformers: Prime episode "Project Predacon" premieres in Hungary.
• 2016 — The Combiner Wars episode "A War of Giants" premieres on go90.
• 2016 — Final day of the Angry Birds Transformers mobile game's "Ride of the Valkyries" Challenge Event.
• 2017 — Transformers: The Definitive G1 Collection: Volume 40: Maximum Dinobots is released by Hachette Partworks.
• 2019 — The Cyberverse episode "Sea of Tranquility" premieres in Germany.
• 2019 — The Cyberverse episode "Bad Moon Rising" premieres on the Cartoon Network website.
• 2019 — What would've been the first day of HasCon 2019.
• 2024 — Quavo's single "If I Fall" is released.
• 2025 — The Cyberworld episode "What Goes Up" premieres on YouTube.

September 7

• 1895 — The Iceman is discovered by Archibald Witwicky. Transformers
• 1901 — The Boxer Rebellion in China officially ends.
• 1926 — Don Messick (voice of Generation 1 Gears, Ratchet and Scavenger) is born. Rooby-Rooby-Roo!
• 1934 — Producer Joe Bacal is born.
• 1973 — Alex Kurtzman (co-writer of Transformers and Revenge of the Fallen) is born.
• 1974 — Hiroki Takahashi (voice of Beast Wars II Starscream/Hellscream, Car Robots Guildor, Build Hurricane and Japanese voice of Optimus Prime) is born.
• 1975 — Illustrator Brian Rood is born in Toledo.
• 1975 — Duda Espinoza (Portuguese voice of Kenneth Onishi and Ironhide) is born.
• 1986 — The Fight! Super Robot Lifeform Transformers episode "The Laws of Planet Cybertron" premiers in Japan.
• 1987 — Marcus Júnior (Brazilian voice of Fred) is born.
• 1991 — Lin Gothoni (German voice of Casey) is born.
• 2002 — Fox Kids has its final broadcast in the US after Disney acquires Fox Kids Worldwide.
• 2004 — Beast Wars Transformers: The Complete Third Season is released on DVD in the US by Kid Rhino.
• 2006 — The Cybertron episode "Escape" premieres in the US.
• 2008 — The Animated episodes "Blast from the Past" premieres in France.
• 2010 — Zeta Prime, Dead End and 5 new maps are released as a DLC packet for the PC, 360 and PS3 version of War For Cybertron.
• 2011 — The Transformers #25 is released by IDW Publishing.
• 2011 — The Prime episode "Darkness Rising, Part 3" premieres in the UK on Cartoon Network and sister channel, Cartoon Network TOO.
• 2012 — The Transformers: Prime episode "New Recruit" premieres on The Hub.
• 2012 — The Transformers: Prime episode Darkness Rising, Part 5 premieres in Indonesia.
• 2014 — The Transformers Theme Song DVD ~Transformers Music Matrix 30th Anniversary Ver.~ albulm is released by Columbia Music Entertainment.
• 2015 — The Robots in Disguise episode "Out of Focus" premieres in both Italy and Poland.
• 2015 — The Q-Transformers" episode "The Road to These Definitely Failed Sequels" first premieres.
• 2017 — The HasCon 2017 crossover comic "When Worlds Collide" is released.
• 2017 — The Robots in Disguise episode "Out of the Shadows" premieres in France.
• 2019 — The Rescue Bots Academy episodes "Space Case", "All At Sea", "All Washed Up" and "Who's Teaching Who?" premiere on Discovery Family.
• 2019 — The Cyberverse episode "Sea of Tranquility" premieres on Cartoon Network.
• 2019 — Robert Axelrod (voice of Movor) passes away.
• 2019 — The Cyberverse episodes "Spotted" and "Secret Science" premieres in Australia and New Zealand.
• 2019 — What would've been the second day of HasCon 2019.
• 2020 — The Generations Selects Special Comic Volcanicus comic 1 is first published.
• 2022 — Transformers: Best of Bumblebee is released by IDW Publishing.
• 2023 — Final day to pre-order the Legacy Selects GADEP off TakaraTomy Mall.
• 2023 — TakaraTomy officially reveals Transformers Masterpiece Movie MPM-11D Dark Of The Moon Ratchet and Transformers Beast Wars Again BWVS-07 Loyal Showdown Airazor vs Inferno.

September 8

• ???? — Marco Guerrero (Mexican voice of Fairmaestro) is born.
• 1918 — Serge Lhorca (European French voice of Galvatron, Brawl, Bruticus and Seaspray in the original cartoon) is born.
• 1929 — Jean Brousseau (Canadian French voice of Sentinel Prime in Dark of the Moon) is born.
• 1950 — Naoki Tatsuta (Japanese voice of Headmasters Mindwipe and Firebolt) is born.
• 1958 — Mitsuru Miyamoto (Japanese voice of John F. Kennedy) is born.
• 1964 — Mitchell Whitfield (voice of Fixit) is born. Immediately mistaken for robbing and shooting the clerk at the Sac O Suds convenience store.
• 1968 — Sergio Gutiérrez Coto (Mexican voice of Dylan Gould and Cliffjumper) is born.
• 1970 — Motoko Kumai (voice of Takao Kinomiya and Japanese voice of Raf Esquivel) is born.
• 1972 — Tomokazu Seki (Japanese voice of Skids) is born.
• 1974 — Nobuyuki Kobushi (Japanese voice of Side Swipe, Fred and Jawbreaker) is born.
• 1981 — Artist Eryck Webb is born.
• 1985 — Joana Lafuente (colorist for several IDW Publishing titles, including a few Spotlights and some issues of Maximum Dinobots) is born.
• 1990 — Fox Kids is launched and begins its first broadcast.
• 1991 — The Victory episode "Guyhawk" premieres in Malaysia.
• 1999 — The Beast Wars Neo episode "Fight! Maximals" premieres in Japan.
• 2001 — The 2001 Robots in Disguise cartoon premieres in America with the episode "Battle Protocol!".
• 2006 — The Cybertron episode "Family" premieres in the US.
• 2008 — The live-action film is released on Blu-ray in the UK by Paramount Pictures.
• 2010 — The Transformers: Drift issue 1 and Best of Megatron TPB are released outside the US by IDW Publishing.
• 2011 — The Prime episode "Darkness Rising, Part 4" premieres in the UK on Cartoon Network and sister channel, Cartoon Network TOO.
• 2012 — The Super Robot Lifeform Transformers: Prime episode "One-Shot Transformation! Optimus Prime VS Megatron" premieres in Japan.
• 2015 — The Transformers Prime compilation DVD "Ultimate Decepticons" is released in the US by Shout! Factory.
• 2015 — The Robots in Disguise episode "Even Robots Have Nightmares" premieres simultanouesly in Brazil, Italy and Poland.
• 2016 — First day of the Angry Birds Transformers mobile game's "Flight of the Bumblebee" Challenge Event.
• 2017 — The first day of HasCon 2017.
• 2017 — Toshihiko Nakajima (Japanese voice of Crumplezone) dies at the age of 55.
• 2017 — The Robots in Disguise episode "Disordered Personalities" premieres in France.
• 2018 — The Cyberverse episode "Memory" premieres on Cartoon Network.
• 2018 — The Transformers: Bumblebee Overdrive mobile game is released.
• 2019 — The Cyberverse episodes "Infinite Vendetta" and "I Am The Allspark" premieres in Australia and New Zealand.
• 2019 — The Generations Selects Nightbird and Zetar toys are shipped from Hasbro Pulse.
• 2019 — What would've been the third and final day of HasCon 2019.
• 2022 — Transformers Hall of Fame voting for 2022 begins.
• 2023 — Transformers Hall of Fame voting for 2023 begins.
• 2023 — The Transformers: EarthSpark episode "Warzone" premieres in Canada on YTV.
• 2023 — Hasbro announces a new official Transformers x Bobby Abley collaboration.
• 2024 — The EarthSpark episode "Sharktron Jumps Out When Called" premieres in Japan.
• 2024 — Peter Reneday (voice of Grapple and Lord Chumley) dies at age 89.
• 2025 — Hasbro annouces it plans to relocate its headquarters from Pawtucket, Rhode Island to Boston, Massachusetts by the end of 2026.

September 9

• 1954 — Jeffrey Combs (voice of Prime Ratchet) is animated. The re-animating comes much later.
• 1958 — Colin Murdoch (voice of Quickstrike, Thrust, Sureshock, Scorponok, Wing Saber/Wing Dagger and more) is born.
• 1968 — Kim Seung-tae (Korean voice of Hot Shot, Dark Scream, and Rollbar) is born.
• 1971 — Storyboard artist Dave Bullock is born.
• 1972 — Goran Višnjić (Croatian voice of Orion Pax/Optimus Prime in Transformers One) is born.
• 1972 — Tomo Shigematsu (Japanese voice of Rad's mom) is born.
• 1973 — Brian Dobson (voice of Red Alert, Clocker and more) is born.
• 1974 — Ferenc Hujber (Hungarian voice of William Lennox in the Transformers live-action film series) is born.
• 1984 — Writer Greg Hahn is born.
• 1990 — The Super-God Masterforce episode "The Birth of a Super Warrior" premieres in Malaysia.
• 1995 — Actor Chip Hormess ("Cool, mom!" kid in Transformers) is born.
• 1995 — The Kids' WB programming block begins its first broadcast.
• 1998 — The Beast Wars II episode "Face the Setting Sun" premieres in Japan.
• 2000 — The Beast Machines episode "A Wolf in the Fold" premieres in the U.S. on Fox Kids.
• 2003 — Armada Cheetor and Predacon are released in Japan as "USA Editions" exclusively through Toys"R"Us's website.
• 2004 — The War Within: The Dark Ages TPB is released in the US by Dreamwave Productions.
• 2004 — Takara releases the Robot Masters RM-13 Smokesniper and RM-14 Gigant Bomb.
• 2010 — The Transformers: Drift issue 1 and Best of Megatron TPB are released in the US by IDW Publishing.
• 2011 — The Prime episode "Darkness Rising, Part 5" premieres in the UK on Cartoon Network and sister channel, Cartoon Network TOO.
• 2013 — Fun Publications reveals that three of the 2014 Figure Subscription Service toys come with additional accessory-partners: Chromedome with Stylor, Barricade with Frenzy and Treadshot with Catgut.
• 2013 — The Transformers: Prime episode "Chain of Command" premieres in Hungary.
• 2014 — The Transformers: Dark of the Moon Limited Edition Steelbook (Blu-Ray) is released to home media.
• 2015 — The Transformers: Spotlight Omnibus Volume 2 TPB is released by IDW Publishing.
• 2015 — The Transformers: Frontiers mobile game is released in China.
• 2015 — The Robots in Disguise episode "Some Body, Any Body" premieres in both Italy and Poland.
• 2017 — Second day of HasCon 2017.
• 2017 — The Robots in Disguise episode "Exiles" premieres on Cartoon Network in the U.S.
• 2017 — The Rescue Bots episodes "New Normal" and "Bridge Building" premieres in Italy.
• 2020 — Transformers: The Definitive G1 Collection: Volume 94: Beast Wars: The Ascending is released by Hachette.
• 2022 — Another 30 second Transformers: EarthSpark teaser trailer is uploaded.
• 2023 — The Transformers: EarthSpark episode "Warzone" premieres in France.
• 2023 — The Transformers: EarthSpark episode "Home, Part 2" premieres in Hungary.
• 2024 — Transformers Hall of Fame voting for 2024 ends.
• 2025 — The Transformers Wild King Extra Volume Exciting Battle! Wildocking! episode "The Scariest Combination!? World Dragnus Appears!" is released on the TakaraTomy YouTube channel.

September 10

• 1928 — Selma Lopes (Brazilian voice of Tova Anael Fischer) is born.
• 1949 — Pundit Bill O'Reilly is born.
• 1952 — Writer Gerry Conway is born.
• 1952 — Martín Soto (Spanish voice of Rattrap, Gas Skunk, and Scalpel) is born.
• 1974 — Claudio Dos Santos (French voice of Bulkhead in Transformers: Prime) is born.
• 1976 — Avery Kidd Waddell (voice of Robert Epps in Revenge of the Fallen: The Game) is born.
• 1980 — Mikey Way (My Chemical Romance bassist and voice of Snarl in Power of the Primes) is born.
• 1985 — Voice recording for The Transformers: The Movie begins.
• 1988 — Transformers #183 - "Space Pirates! Part 2" is released in the UK by Marvel Comics.
• 2001 — The 2001 Robots in Disguise cartoon episode "An Explosive Situation" premieres in the US.
• 2003 — G.I. Joe vs. the Transformers Issue 3 is released in the US by Devil's Due Press.
• 2003 — Transformers Armada #15 is released by Dreamwave Productions.
• 2003 — Armada issue #5 is released in the UK by Panini.
• 2003 — Armada—Vol: 10 is released on DVD in Australia by Warner Music Video.
• 2004 — The Super Link episode "Heroic! Alpha Q's Battle" premieres in Japan.
• 2005 — The Galaxy Force episode "The Big Escape Plan Go" premieres in Japan.
• 2005 — The Cybertron episode "Hero" airs in the U.S.
• 2007 — The The Used single "Pretty Handsome Awkward" is released by Reprise Records.
• 2008 — Transformers Animated: The Arrival #2 is released by IDW Publishing.
• 2008 — Transformers Animated—Transformieren und Abfahrt is released on DVD in Germany by Paramount Pictures.
• 2008 — The Animated episodes "The Thrill of the Hunt" premieres in France.
• 2009 — Transformers Animated Volume 11 and Tales of the Fallen issue 2 is released in the US by IDW Publishing.
• 2010 — The Transformers: Animated volume 2 DVD is released by Paramount Japan.
• 2011 — The Transformers: Prime episode "T.M.I." premieres on The Hub.
• 2013 — Transformers Classified: Satellite of Doom is released by Little, Brown and Company.
• 2013 — The Transformers: Prime episode "Plus One" premieres in Hungary.
• 2013 — Optimus Prime and the Secret Mission is published by Little, Brown and Company.
• 2014 — Primacy #2 is released by IDW Publishing.
• 2015 — The Robots in Disguise episode "One of Our Mini-Cons Is Missing" premieres in Italy and Poland.
• 2016 — The Rescue Bots episode "The Need for Speed" premieres on Discovery Family.
• 2016 — The Robots in Disguise episode "History Lessons" premieres on Teletoon in Canada.
• 2017 — The last day of HasCon 2017.
• 2017 — Writer Len Wein passes away at age 69.
• 2019 — The Generations Selects Special Comic Seacons comic 4 is first published.
• 2020 — "Haunting of Bot House" is uploaded to YouTube.
• 2023 — The Transformers: EarthSpark episode "Home, Part 1" premieres in France.
• 2023 — The Transformers: EarthSpark episode "A Stygi Situation" premieres in Hungary.
• 2023 — The Beast Wars Again episode "Fare Thee Well, Tigatron (Part 2)" airs on TV Tokyo.
• 2024 — JB HI-FI officially reveals the Transformers Retro Bombshell & Ramhorn.
• 2025 — Transformers #24 is released by Image Comics and Skybound Entertainment.

September 11

• 1940 — Michael Schwarzmaier (German voice of Rad's Father) is born.
• 1963 — Masumi Tsuda (Japanese voice of Sally Watson) is born.
• 1967 — Marcelo Pissardini (Brazilian voice of both Animated and Prime Ultra Magnus, Springer and more) is born.
• 1975 — Dirk Meyer (German voice of Daniel Witwicky and Spike Witwicky in Generation 2) is born.
• 1985 — Voice recording for The Transformers: The Movie ends.
• 1987 — The Headmasters episode "Cybertron Is in Grave Danger, Part 2" premieres in Japan.
• 1989 — Rie Hikisaka (Japanese voice of Rosato) is born.
• 1992 — GONZO (animation studio of Cybertron) is founded.
• 1992 — Harim Song (Korean voice of Robby Malto) is born.
• 1993 — The Usenet newsgroup alt.toys.transformers is formed, more-or-less the Fertile Crescent of the modern online fandom.
• 2001 — Attacks on the World Trade Center and Pentagon resulted in the pre-emption of regular television programming for several days, including the Robots in Disguise cartoon. Many episodes are subsequently edited for content. Three episodes are pulled from rotation and never air in the U.S. The Robots in Disguise episode "Bullet Train to the Rescue" premieres in the U.S. in areas where cartoons were aired earlier than 9 AM EST.
• 2002 — Generation 1: Prime Directive #5 is released by Dreamwave Productions.
• 2003 — Takara releases Legends of the Microns MC-12 Ratchet Super Mode, MC-13 Hot Rod Super Mode, MD-08 Megatron Super Mode, MD-09 Starscream Super Mode, MM-18 Sea Micron Exdimensions, MM-19 Adventure Micron Exdimensions, and MM-20 Emergency Micron.
• 2006 — The 24th show in the Kiss Players radio drama series airs in Japan on the "Lyrian Moe-tchao" program.
• 2006 — The Cybertron episode "Titans" premieres in the U.S.
• 2009 — Last day of pre-orders for Masterpiece King Grimlock.
• 2010 — The Animated episode "Heart of the Spider Woman" premieres in Japan.
• 2011 — The Prime episode "Darkness Rising, Part 1" premieres in Italy.
• 2012 — "Quest for Energon, Part 1" is uploaded to the Transformers YouTube page.
• 2012 — The Dinobot Destructor Pack DLC is available for download for Fall of Cybertron.
• 2012 — The Prime episode "Scrapheap" premieres in Indonesia.
• 2013 — Monstrosity #4 is released by IDW Publishing.
• 2013 — The Prime episode "Thirst" premieres in Hungary.
• 2015 — Stuntman Alan Purwin dies at age 54.
• 2016 — The Robots in Disguise episode "Portals" premieres in Japan.
• 2017 — The Robots in Disguise episode "Guilty As Charged" premieres in France.
• 2019 — The Cyberverse episode "Bad Moon Rising" premieres in Germany.
• 2020 — Roger Carel (European French voice of Beachcomber and Inferno in "The Insecticon Syndrome" episode of the original cartoon) passes away at age 93.
• 2023 — Transformers Hall of Fame voting for 2023 ends.
• 2024 — Transformers #12 is released by Image Comics and Skybound Entertainment.
• 2024 — Squad Busters x Transformers Collaboration is annouced.
• 2024 — Nankatsu FC/Captain Tsubasa x Transformers Collaboration is also annouced.
• 2024 — Transformers One is theatrically released in Indonesia.

September 12

• 1952 — Yukitoshi Hori (voice of Mine overseer) is born.
• 1967 — Lorenzo Beteta (Castilian Spanish voice of Predacon Megatron in War for Cybertron Trilogy) is born.
• 1976 — Marie Nonnenmacher (French voice of Hashtag, Skywarp and Nova Storm in EarthSpark - Expedition) is born.
• 1986 — The Fight! Super Robot Lifeform Transformers episode "Caused War" premieres in Japan.
• 1986 — Alfie Allen (voice of Tarantulas) is born.
• 1989 — The Victory episode "Crisis! Ambush in the Desert" premieres in Japan.
• 1997 — Claster powers down the Power Block syndication block, which includes Beast Wars.
• 1997 — Shunsuke Takeuchi (Japanese voice of Wheeljack and Thrash) is born.
• 1998 — The Beast Wars episode "Before the Storm" premieres in Germany.
• 2001 — The Robots in Disguise (2001) episode "Bullet Train to the Rescue" premieres in the US.
• 2003 — The Legends of the Microns episode "火星 (しょうとつ) - Mars" premieres in Japan.
• 2003 — The Armada episode "Miracle" premieres on YTV in Canada.
• 2005 — The Transformers: The Movie is released on UMD in the UK by Metrodome.
• 2006 — The Cybertron episode "Warp" premieres in the US.
• 2007 — New Avengers/Transformers #3 is released by Marvel Comics and IDW Publishing.
• 2007 — Best of UK: Dinobots #1 is released by IDW Publishing.
• 2011 — The Prime episode "Masters & Students" premieres in the UK on Cartoon Network and sister channel, Cartoon Network TOO.
• 2011 — The Transformers: Prime episode Darkness Rising, Part 5 premieres in South Korea.
• 2012 — The Transformers: More than Meets the Eye Annual 2012 is released by IDW Publishing.
• 2012 — Transformers Prime Volume 3 — Alien Threat is released on DVD and Blu-ray in Australia and New Zealand by Madman Entertainment.
• 2012 — The Transformers: Prime episodes "Convoy" and "Con Job" premiere in Indonesia.
• 2013 — The Transformers: Prime episode "Evolution" premieres in Hungary.
• 2015 — The Robots in Disguise episode "Battlegrounds, Part 2" premieres on Cartoon Network in the USA.
• 2016 — Final day of the Angry Birds Transformers mobile game's "Flight of the Bumblebee" Challenge Event.
• 2017 — The Transformers Prime compilation DVD "Ultimate Rivals" is released in the US by Shout! Factory.
• 2017 — Transformers: The Last Knight is released on digital.
• 2017 — The Rescue Bots episode "Arrivals" and "Plus One" premieres in Italy.
• 2017 — The Robots in Disguise episode "The Golden Knight" premieres in France
• 2018 — Transformers: Bumblebee - Win If You Dare TPB and reprints of Transformers: Unicron #1 and #2 are released by IDW Publishing.
• 2020 — The Transformers: Cyberverse episode "Battle For Cybertron III" premieres in Germany.
• 2023 — On this Transformers Tuesday, Hasbro announces a reissue of the Titans Return Fortress Maximus and pre-orders go up.
• 2024 — TakaraTomy releases the Transformers One Brave Commander Optimus Prime.
• 2024 — Transformers One is theatrically released in Brazil, Ecuador, Malaysia and Singapore.
• 2024 — "Transformers 40th Anniversary Special Movie" is uploaded onto TakaraTomy's YouTube.

September 13

• 1924 — Norman Alden (voice of Kranix from The Transformers: The Movie) is born.
• 1954 — Gerolamo Alchieri (Italian voice of Mega-Octane and Sideways) is born.
• 1962 — Hisao Egawa (Japanese voice of Overhaul/Leobreaker, Nemesis Breaker, Sideswipe and Stockade) is born.
• 1970 — Susumu Chiba (Japanese voice of Armada Jetfire and Wheeljack and Cybertron Sideways and Tim Hansen) is born.
• 1975 — Alan Prieto (Spanish voice of Revenge of the Fallen Skids) is born.
• 1986 — Marco Giansante (Italian voice of Gawain) is born.
• 1988 — The Super-God Masterforce episode "The Autobot Warrior, Sixknight?!" premieres in Japan.
• 1991 — Sam Witwicky is born... maybe. Revenge of the Fallen
• 1992 — The Headmasters episode "Crisis on Cyberton, Part 1" airs in Malaysia.
• 2000 — The Car Robots episode "Enter! God Magnus" premieres in Japan.
• 2001 — The Robots in Disguise (2001) episode "Spychangers to the Rescue" premieres in the US.
• 2003 — Transformers: Armada premieres in France with the episode "First Encounter"..
• 2005 — Transformers: Cybertron — A New Beginning is released on DVD in the US by Paramount Pictures.
• 2006 — The Cybertron episode "Giant" premieres in the US.
• 2006 — The first Spotlight issue, Spotlight: Shockwave and the first original Transformers series by IDW, Infiltration TPB are released by IDW Publishing. The Art of War TPB is released by Devil's Due Press.
• 2008 — The Animated episode "The Elite Guard" premieres in Latin America.
• 2008 — The Animated episodes "Nanosec" premieres in France.
• 2012 — The Transformers: Prime episode "Deus ex Machina" premieres in Indonesia.
• 2013 — "Subway Mystery" is first published by Eaglemoss/GE Fabbri in Russia.
• 2013 — The Transformers: Prime episode "Minus One" premieres in Hungary.
• 2016 — The Transformers: The Movie is rereleased on DVD, and released on Blu-ray for the first time in Region 1 by Shout! Factory.
• 2016 — "Identity Politics" is released by Fun Publications.
• 2016 — The Combiner Wars episode "Darkest Hour" premieres on go90.
• 2017 — First Strike #3 and Lost Light #9 are released by IDW Publishing.
• 2017 — The Rescue Bots episodes "Back to Virtual Reality" and "Vanishing Returns" premiere in Italy.
• 2017 — The Robots in Disguise episode "The Fastest Bot Alive!" premieres in France.
• 2024 — Hasbro Pulse Con 2024 takes place and preorders go up for whats revealed.
• 2024 — First day of the Transformers Expo 2024 in Tokyo, Japan and Missing Link Sunstreaker is revealed.
• 2024 — Initial release date for Transformers One, would ultimately be released the following week. One is, however, theatrically released in Bangladesh and Taiwan.

September 14

• 1950 — Writer Michael Reaves is born.
• 1952 — Sylvain Lemarié (French voice of Ratchet and Starscream in Animated, Zeta Prime in the War for Cybertron game and more) is born.
• 1958 — Marisa Leal (Brazilian voice of Carl) is born.
• 1962 — Julien Kramer (European French voice of Megatron in the live-action film series) is born.
• 1968 — Marcelo Armand (Argentinian voice of Optimus Prime) is born.
• 1970 — Laura Romano (Italian voice of Airazor) is born.
• 1973 — Rapper Nas is born.
• 1982 — Jenny van der Wall (German voice of Miss Frederick, Fottle Barts and more) is born.
• 1985 — The Fight! Super Robot Lifeform Transformers episode "Frankenstein Spike" airs in Japan, actually beating the US airdate by nine days.
• 1988 — Keibunsha publishes the Hero Special 12: Laser Beasts mook.
• 1989 — Frank Matano (Italian voice of Stratosphere) is born.
• 1991 — Ana Sani (voice of Ring-A-Ling) is born.
• 1992 — The original Transformers cartoon series makes its very belated premiere in New Zealand.
• 1992 — Japanese voice actor Yusaku Hiyama is born.
• 2001 — The 2001 Robots in Disguise cartoon episode "The Hunt for Black Pyramid" premieres in the US.
• 2006 — The Cybertron episode "Fury" premieres in the US.
• 2008 — The Animated episodes "Along Came a Spider" premieres in France.
• 2011 — The Transformers: Volume 4: Heart of Darkness trade paperback is released by IDW Publishing.
• 2012 — The Transformers: Prime episode "The Human Factor" premieres on The Hub.
• 2012 — The Transformers: Prime episode "Speed Metal" premieres in Indonesia.
• 2015 — Transformers Prime — Darkness Rising, Dangerous Ground, Decepticons Unleashed, Unlikely Alliances and One Shall Stand are re-released to home media in the United Kingdom by Universal Pictures UK.
• 2015 — Transformers Prime: Beast Hunters — Predacons Rising is released to home media in the United Kingdom by Primal Screen.
• 2015 — The Robots in Disguise episode "The Champ" premieres in Poland.
• 2015 — The Q-Transformers" episode "The Road to Small and Cute Transformers" first premieres.
• 2016 — First day of the Angry Birds Transformers mobile game's "Lock & Load" Challenge Event.
• 2017 — The Rescue Bots episodes "Ghost in the Machine" and "Enemy of My Enemy premiere in Italy.
• 2017 — The Robots in Disguise episode "Railroad Rage" premieres in France.
• 2018 — The Cyberverse episode "Allspark" airs on the Cartoon Network app and website.
• 2019 — The Rescue Bots Academy episodes "Balloon Up A Tree" and "The Mystery of Dragon Mountain" premiere on Discovery Family.
• 2019 — The Cyberverse episode "Bad Moon Rising" premieres on Cartoon Network.
• 2019 — The Cyberverse episodes "Escape From Earth" and "Party Down" premieres in Australia and New Zealand.
• 2019 — The Cyberverse episode "Sea of Tranquility" premieres in Japan.
• 2024 — Early theatrical screenings of Transformers One begin in Canada, U.S., Brazil and South Korea.

September 15

• ???? — Héctor Moreno (Mexican voice of Obsidian, Vehicons, Springload and Thunderhowl) is born.
• ???? — Dafne Gallardo (Mexican voice of Skywarp and Elita) is born.
• 1947 — Hannibal Brown (Latin American Spanish voice of Ultra Magnus) is born.
• 1949 — Composer Masahiro Kawasaki is born.
• 1958 — Actor Drew Pillsbury (Robert McNamara in Transformers: Dark of the Moon) is born.
• 1962 — Scott McNeil (voice of Rattrap, Dinobot, Silverbolt, Waspinator, Jetfire and many more) is born, and cries in six different voices.
• 1971 — Colleen O'Shaughnessey (voice of Jenny) is born.
• 1975 — Gerrit Schmidt-Foß (German voice of Patrick Donnelly) is born.
• 1981 — Ben Schwartz (Bumblebee's radio voice in Age of Extinction) is born to be blue.
• 1986 — The Transformers episode "Five Faces of Darkness, Part 1" premieres in the US.
• 1999 — The Beast Wars Neo episode "End of the Maximals!?" premieres in Japan.
• 2001 — The 2001 Robots in Disguise cartoon episode "Sideburn's Obsession" premieres in the US.
• 2003 — Universal/Right releases Transformers: Armada — Vol: 02 on VHS and DVD in the UK.
• 2004 — Dreamwave releases War Within: The Age of Wrath #1 and Micromasters #3 in the US.
• 2004 — G.I. Joe vs. the Transformers II #1 is released in the US by Devil's Due Press.
• 2004 — Super Link — Volume 005 is released on DVD in Japan by Interchannel.
• 2005 — The last chapter of the Galaxy Force manga is serialized by the later defunct Comic BomBom in their October 2005 issue.
• 2006 — The Cybertron episode "City" premieres in the US.
• 2007 — Transformers Collection 2007 is published in Japan by MediaWorks.
• 2009 — The Transformers — Season Two, Volume One: 25th Anniversary Edition is released on DVD in the US by Shout! Factory.
• 2009 — Starscream Flies Again is published in the US by HarperCollins Publishers.
• 2009 — Comic BunBun suspends publication in Japan, ending with chapter 12 "To the Sea of Stars" of the Henkei! Henkei! Transformers manga in their October 2009 issue.
• 2010 — The Transformers #11 is released by IDW Publishing.
• 2011 — Revoltech Dark of the Moon Optimus Prime is released in Japan (after originally being scheduled for September 1).
• 2011 — The Fight Super Robot Lifeform Transformers: Prime episode "Giant God Transformation! The Advance of Gaia Unicron" premieres in Japan.
• 2012 — Stan Bush releases "The Touch (Power Mix)" single on iTunes.
• 2015 — The Robots in Disguise episode "Some Body, Any Body" premieres in Brazil.
• 2015 — The Robots in Disguise episode "The Champ" premieres in Italy.
• 2015 — The Robots in Disguise episode "The Trouble with Fixit" premieres in Poland.
• 2016 — The Rescue Bots episode "Too Many Kades" premieres in Hungary.
• 2017 — The Rescue Bots episodes "Mayor May Not" and "All Spark Day" premiere in Italy.
• 2018 — The Cyberverse episode "Allspark" airs on Cartoon Network.
• 2018 — TakaraTomy releases Studio Series SS-13 Shadow Raider, SS-14 Autobot Ratchet, and SS-15 Ironhide.
• 2019 — The Cyberverse episodes "Wiped Out" and "Ghost Town" premiere in Australia and New Zealand.
• 2019 — The Cyberverse episodes "Trials" and "Dark Birth" premiere in France.
• 2020 — ViacomCBS announces that it would rebrand CBS All Access and 10 All Access to Paramount+.
• 2022 — The Transformers: EarthSpark Roll Call promo is uploaded.
• 2022 — Transformers Hall of Fame voting for 2022 ends.
• 2022 — Paramount+ launches in Italy.
• 2022 — Transformers Go! Go! #15 is published.
• 2023 — The Transformers: EarthSpark episode "Home, Part 1" premieres in Canada on YTV.
• 2023 — Transformers Go! Go! #29 is published.
• 2024 — The EarthSpark episode "The Ultimate Weapon" premieres in Japan.
• 2025 — Ron Friedman (writer of The Transformers: The Movie) dies at age 93.

September 16

• 19?? — Transformers: Generations lead designer Mark Maher is born.
• 1908 — General Motors is founded in Flint, Michigan.
• 1943 — Keiichi Noda (voice of Raiden, Shouki, Professor Gō, Giga, Overlord and others) is born.
• 1950 — Son Jeong-ah (Korean voice of Judy Witwicky and Tova Anael Fischer) is born.
• 1952 — Jesús Brock (Latin-American Spanish voice of Soundwave in The Headmasters) is born.
• 1965 — Michel Hinderyckx (French voice of Mayor Luskey, Thurston Chumley, and Stockade) is born.
• 1966 — Seung-uk Jeong (Korean voice of Robots in Disguise Optimus Prime) is born.
• 1972 — Grzegorz Falkowski (Polish voice of Chase) is born.
• 1976 — Sound Designer and Editor Erik Aadahl (voice of Bumblebee in Transformers: The Last Knight) is born.
• 1984 — Tiaggo Guimarães (Brazilian voice of Cheetor and Teletraan-1) is born.
• 1986 — The Transformers cartoon episode "Five Faces of Darkness, Part 2" premieres in the US.
• 1987 — Dan Frausto (Mexican voice of Thundercracker, Chitter Click and Wheeljack) is born.
• 1990 — The Super-God Masterforce episode "The Dramatic Encounter" premieres in Malaysia.
• 1996 — Claster powers up the Power Block syndication block, which includes Beast Wars.
• 1998 — The Beast Wars II episode "The Final Battle" premieres in Japan.
• 2000 — The Beast Machines episode "Home Soil" premieres in the U.S. on Fox Kids.
• 2004 — Takara releases Super Link SC-22 Omega Supreme; Japanese Toys"R"Us stores offer the promotional Micron Screw free with with the purchase of an Omega Supreme.
• 2009 — All Hail Megatron #15 and the All Hail Megatron TPB Volume 2 are released by IDW Publishing.
• 2013 — The Transformers: Prime episode "Persuasion" premieres in Hungary.
• 2014 — Buster Jones (voice of Generation 1 Blaster) passes away.
• 2015 — The Robots in Disguise episode "The Trouble with Fixit" premieres in Italy.
• 2015 — The Robots in Disguise episode "Lockout" premieres in Poland.
• 2016 — The Rescue Bots episode "Phantom of the Sea" premieres in Hungary.
• 2017 — The Robots in Disguise episode "Breathing Room" premiered on Cartoon Network.
• 2018 — Transformers: Cyberverse makes its Canadian television broadcast premiere on Teletoon.
• 2019 — The Vintage G1 "Mini-Cassettes 3-Pack" (Gurafi, Noizu, Frenzy) is shipped from Hasbro Pulse.
• 2020 — Transformers #23, Galaxies #10 and Volume 2: The Change In Their Nature HC are released by IDW Publishing.
• 2023 — The Transformers: EarthSpark episode "Home, Part 2" premieres in France.
• 2023 —The Transformers: EarthSpark episode "Disarmed" premieres in Hungary.
• 2024 — Squad Busters x Transformers Collaboration begins.

September 17

• ???? —Valeria Castillo (Latin-American Spanish voice of Thunderblast) is born.
• 1923 — Musician Hank Williams is born.
• 1955 — Satō Vinyl Industries, Ltd., which would later become Takara, is formed in Japan.
• 1958 — Sander de Heer (Dutch voice of Starscream) is born.
• 1984 — Barbora Šedivá (Cezch voice of Charlie Watson) is born.
• 1984 — The original Transformers cartoon series premieres with the episode "More than Meets the Eye, Part 1" in the United States.
• 1984 — The Transformers arrive on Earth for the first time. Secret Legacy, Part 1
• 1985 — Nicolas Matthys (French voice of Heatwave, Croaton and more) is born.
• 1986 — The Transformers episode "Five Faces of Darkness, Part 3" premieres in the U.S.
• 1987 — Family Home Entertainment releases The Transformers: The Movie and "The Return of Optimus Prime, Part 1" on VHS and Beta in the U.S.
• 1988 — The Transformers #184: "Space Pirates!" is released in the UK by Marvel Comics.
• 1994 — The Generation 2 episode "Masquerade" premieres in Germany.
• 2001 — Beast Wars — The Beginning: Vol. 4 is released on VHS in the UK by Universal.
• 2001 — The Robots in Disguise episode "Secret Weapon: D-5" premieres in the U.S.
• 2003 — Armada Volume 2: Fortress TPB is released by Dreamwave Productions.
• 2003 — Armada: The Awakening and The Quest are released in the U.S. by DK Publishing.
• 2004 — The Super Link episode "Laserwave's Last Moments" premieres in Japan.
• 2005 — The Cybertron episode "Race" premieres in the U.S.
• 2005 — The Galaxy Force episode "And So, It Is Time to Go on a Journey" premieres in Japan.
• 2008 — "I, Lowtech" is released through the Fun Publications Official Transformers Collectors' Club members-only section.
• 2008 — All Hail Megatron #3 and Spotlight Volume 3 TPB are released by IDW Publishing.
• 2008 — The Animated episode "Survival of the Fittest" premieres in France.
• 2011 — The Prime episode "Darkness Rising, Part 2" premieres in Italy.
• 2011 — The Prime episode "Stronger, Faster" premieres on Hub Network.
• 2012 — The Prime episode "Predatory" premieres in Indonesia.
• 2013 — The Prime episode "Synthesis" premieres in Hungary.
• 2014 — More than Meets the Eye #33 and Phase One Omnibus are released by IDW Publishing.
• 2015 — The Robots in Disguise episode "Lockout" premieres in Italy.
• 2015 — The Robots in Disguise episode "Similarly Different" premieres in Poland.
• 2016 — The 99th Rescue Bots episode, "Cody's 11", premieres in the U.S., officially making Rescue Bots the longest-running Transformers cartoon.
• 2016 — The Rescue Bots episode "Unfinished Business" premieres in Hungary.
• 2016 — The Robots in Disguise episode "Strongarm's Big Score" premieres in Canada on Teletoon.
• 2017 — Carlos Íñigo (Latin-American Spanish voice of Waspinator and Side Burn) dies at age 56.
• 2019 — The Cyberverse episode "The Visitor" premieres in Germany.
• 2019 — The Cyberverse episodes "Perfect Storm" and "The Crossroads" premiere in Australia and New Zealand.
• 2021 — The Cyberverse episodes "Battle For Cybertron I" through "The Sleeper" premiere in Brazil.
• 2022 — Carlos Comério (Brazilian voice of Oracle) dies at age 56 from lung cancer.
• 2023 — The Beast Wars Again episode "Rhinox Rampages! (Part 1)" airs on TV Tokyo.
• 2023 — The EarthSpark episode "A Stygi Situation" premieres in France.
• 2023 — The EarthSpark episode "What Dwells Within" premieres in Hungary.
• 2024 — Transformers Day 2024.
• 2025 — G.I. Joe #11 is released by Image Comics and Skybound Entertainment.
• 2025 — The Cyberworld episode "Storm the Desert" premieres on YouTube.
• 2025 — Transformers Day 2025, preorders for many of the first wave of Studio Series of 2026 go up.

September 18

• ???? — Yoshinori Tsushima (Japanese voice of Tank) is born.
• 1931 — Hans Sievers (German voice of Megatron) is born.
• 1933 — Fred Willard (voice of Animated Swindle) is born.
• 1955 — Bob Papenbrook (voice of Mega-Octane and Ruination) is born.
• 1961 — Marvel Comics inker Brian Garvey is born.
• 1965 — Thomas Semeraro (Italian voice of Zeta Prime) is born.
• 1984 — The Transformers episode "More than Meets the Eye, Part 2" premieres in the US.
• 1985 — Writer Mairghread Scott is born.
• 1986 — The Transformers episode "Five Faces of Darkness, Part 4" premieres in the US.
• 1987 — The Headmasters episode "The Shadow Emperor, Scorponok" premieres in Japan.
• 1992 — Voice actress Marissa Lenti is born.
• 1996 — The Beast Wars episode "The Web" premieres in the US.
• 1999 — The Beast Machines episode "The Reformatting" premieres in the US.
• 2001 — The Robots in Disguise episode "Mirage's Betrayal" premieres in the US.
• 2002 — The War Within Preview is released by Dreamwave Productions.
• 2006 — The 25th show in the Kiss Players radio drama series airs in Japan on the "Lyrian Moe-tchao" program.
• 2006 — The Cybertron episode "Ambush" premieres in the US.
• 2010 — Animated Wingblade Optimus Prime, Jetpack Bumblebee, and Cybertron Ratchet are released in Japan.
• 2010 — The Animated episode "Respective Expectations" premieres in Japan.
• 2012 — Prime: Decepticon in Disguise is released by Little, Brown and Company.
• 2012 — The Prime episode "The Return of Megatron: Cybonic Plague" premieres in Indonesia.
• 2013 — Regeneration One #0 and Robots in Disguise Volume 4 TPB are released by IDW Publishing.
• 2013 — The Prime episode "Endgame" premieres in Hungary.
• 2015 — The Robots in Disguise episode "Oh that Windblade" premieres in Poland.
• 2016 — The Rescue Bots episode "The Dome" premieres in Hungary.
• 2016 — The Robots in Disguise episode "Parting of Master and Student" premieres in Japan.
• 2016 — Voice actor C. Martin Croker passes away at age 54.
• 2017 — The Robots in Disguise episode "Unity is Strength" premieres in France.
• 2017 — Toys"R"Us declares bankruptcy.
• 2019 — The Definitive G1 Collection Volume 69: Sins of the Wreckers is released by Hachette Partworks.
• 2019 — Transformers #12 is released by IDW Publishing.
• 2020 — World of Warships: Transformers, a collaboration between Transformers and the online game World of Warships, becomes available, allowing players to obtain time-limited skin designs based on Bumblebee, Megatron, Optimus Prime, and Rumble for various warships.
• 2022 — The EarthSpark Optimus Prime sneak peek promo is uploaded.
• 2023 — The Transformers Hall of Fame voting for 2023 ends.
• 2024 — Destro #4 is released by Image Comics and Skybound Entertainment.
• 2024 — One is theatrically released in the Philippines.
• 2024 — The Transformers Classics Vol. 8 is released by Hero-X.

September 19

• 1942 — Victor Brandt (voice of Robots in Disguise Scorponok) is born.
• 1945 — Hans-Jürgen Dittberner (German voice of Laserbeak) is born.
• 1957 — Mark Acheson (voice of Armada Unicron and Cybertron Crumplezone) is born.
• 1958 — Actor Johnny Sanchez (Clown in Transformers) is born.
• 1962 — Paco Gisbert (Castilian Spanish voice of Ultra Magnus in War for Cybertron Trilogy) is born.
• 1967 — José Antonio Macías (Mexican voice of Bumblebee, Starscream, Hot Rod and also voice director of Transformers: Prime) is born.
• 1967 — Producer Mark Vahradian is born.
• 1969 — Cédric Dumond (French voice of Hot Shot in the PS2 Armada game) is born.
• 1972 — Yoshikazu Nagano (voice of Survive and Build Typhoon) is born.
• 1972 — Tobias Kluckert (German voice of Robert Epps) is born.
• 1973 — Dani Albiac (Castilian Spanish voice of characters including Orion Pax, Spike Witwicky and Wheelie in the late dub of the original cartoon) is born.
• 1974 — Janusz German (Polish voice of Megatronus) is born.
• 1976 — Sidney Cesar (Brazilian voice of Carmine Fanzone) is born.
• 1984 — The Transformers episode "More than Meets the Eye, Part 3" premieres in the U.S.
• 1986 — The Transformers episode "Five Faces of Darkness, Part 5" premieres in the U.S.
• 1986 — The Transformers episode "Masquerade" premieres in Japan.
• 1989 — The Victory episode "A Deadly Battle" premieres in Japan.
• 1997 — Enrico Carabelli (Italian voice of Hardhead and Weirdwolf) dies at age 54.
• 1997 — Vyni Takahashi (Brazilian voice of Cody Burns and Butch) is born.
• 1998 — The Beast Wars episode "Other Voices, Part 1" premieres in Germany.
• 2001 — The Robots in Disguise episode "Skid Z's Choice" premieres in the U.S.
• 2003 — The Armada episode "Puppet" premieres in Canada.
• 2003 — The Legends of the Microns episode "決意 (ぷらいど) - Crack" premieres in Japan.
• 2003 — Transformers: Cybertron Redux HC is released by Titan Books.
• 2004 — The auction for ~MAYUKO IWASA Edition~ Meister begins on Yahoo!Japan Auctions. After ending September 26, it would be relisted October 8th of the same year.
• 2005 — The Cybertron cartoon moves from Cartoon Network to Kids' WB, beginning with the belated premiere of "Fallen", which had been skipped over when the series premiered two months beforehand.
• 2006 — The Cybertron episode "Challenge" premieres in the U.S.
• 2008 — Henkei! Henkei! volume 5 is first released.
• 2008 — TakaraTomy releases Henkei! Henkei! C-07 Sunstreaker and C-08 Prowl.
• 2009 — Hans-Werner Bussinger (German voice of John Keller) dies at age 68.
• 2011 — Earl Kress (writer of "The Immobilizer" and "B.O.T.") dies from cancer at the age of 60.
• 2011 — The Prime episode "Scrapheap" premieres in South Korea.
• 2012 — The Prime episode "Out of His Head" premieres in Indonesia.
• 2015 — TakaraTomy releases Adventure TAV27 Micron Shooter Drift, TAV28 Ground Vehicon General, TAV29 Bumblebee Supreme Mode and TED 12 Thunderhoof, Legends Ultra Magnus, Q-Transformers QT29 Starscream, QT30 Skywarp and QT31 Thundercracker, and the Q-Collaboration QTC02 Evangelion 3-Figure Set.
• 2016 — The Rescue Bots episode "Bugs in the System" premieres in Hungary.
• 2017 — The Robots in Disguise episode "Exiles" premieres in France.
• 2018 — Transformers: The Definitive G1 Collection Volume 24: The War to End All Wars is released by Hachette Partworks.
• 2020 — "Anime Attack!" is uploaded to YouTube.
• 2020 — The Cyberverse episode "Battle For Cybertron IV" premieres in Germany.
• 2023 — ScreenRant posts an article officially revealing the Legacy: United line and the Animated Universe Bumblebee and Animated Universe Optimus Prime figures days ahead of Hasbro Pulse Con 2023.
• 2024 — Transformers One is theatrically released in Argentina, Australia, Greece, Hong Kong, Kuwait, Kazakhstan, Portugal and Ukraine.

September 20

• 1932 — Federico Romano (Mexican voice of Dinobot and Ravage) is born.
• 1933 — Comic artist Tony Tallarico is born in New York.
• 1947 — Story editor Steve Gerber is born to create Howard the Duck.
• 1972 — Flávio Back (Brazilian voice of Scattershot and Hooch) is born.
• 1974 — Masahiro Iwasaki (Japanese voice of Hooch) is born.
• 1984 — The Transformers #1 is released in the UK by Marvel Comics.
• 1988 — The Super-God Masterforce episode "Save the Little Girl! The Chōjin Warriors, the Godmasters" premieres in Japan.
• 1992 — The Headmasters episode "Crisis on Cyberton, Part 2" airs in Malaysia.
• 2000 — The Car Robots episode "Forced Fusion! God Fire Convoy" premieres in Japan.
• 2000 — Car Robots — Vol. 1 & Vol. 2 are released on DVD in Japan by Pony Canyon.
• 2001 — The Robots in Disguise episode "Tow-Line Goes Haywire" premieres in the U.S.
• 2002 — The first day of the Tokyo Game Show in Japan, where Takara sells the show-exclusive SCF "TF Confrontation Set 01: Convoy vs Megatron" pack.
• 2002 — The Armada episode "Comrade" premieres in the U.S.
• 2003 — The Armada episode "Metamorphosis" premieres in France.
• 2005 — Jason Drucker (Otis Watson in Bumblebee) is born.
• 2005 — The Cybertron episode "Haven" belatedly premieres in the U.S., after being skipped over when the series premiered two months beforehand.
• 2006 — The Cybertron episode "Scourge" premieres in the U.S.
• 2007 — TakaraTomy releases the Beast Wars Telemocha Series TM-13 Motorarm.
• 2008 — Toonami ends its original run on Cartoon Network.
• 2008 — The Animated episode "The Return of the Headmaster" premieres in Latin America.
• 2008 — The Animated episode "Nature Calls" premieres in France.
• 2011 — The Prime episode "Con Job" premieres in South Korea.
• 2012 — The Prime episode "Shadowzone" premieres in Indonesia.
• 2013 — Fun Publications releases the final mockup reveal for the Figure Subscription Service 2.0: Chromedome.
• 2014 — TakaraTomy releases Masterpiece MP-20 Wheeljack.
• 2015 — The Robots in Disguise episode "Out of Focus" premieres in Japan.
• 2016 — The series finale of Combiner Wars, "Destruction's Dawn", premieres on go90.
• 2016 — The Rescue Bots episode "Switcheroo" premieres in Hungary.
• 2017 — G.I. Joe: First Strike #1 and Wrath of Karza #5 are released by IDW Publishing.
• 2017 — The Robots in Disguise episode "Breathing Room" premieres in France.
• 2017 — Transformers: The Definitive G1 Collection Volume 22: Natural Selection is released by Hachette Partworks.
• 2021 — Hans-Eckart Eckhardt (German voice of Cyberverse Alpha Trion, Prowl and Hound in War for Cybertron Trilogy) dies at age 68.
• 2022 — "Velocitron Speedia 500 Part 2" is first released.
• 2024 — Super 7 reveals the Amazon exclusive Deluxe VHS Soundwave.
• 2024 — Transformers One is theatrically released in Canada, Estonia, Finland, Iceland, India, Japan, Latvia, Poland, Romania, Spain, Sweden, Turkey and the U.S.

September 21

• ???? — Mayumi Kurokawa (Japanese voice of Bud Hansen) is born.
• ???? — Japanese voice actor Joichiro Yoshida is born.
• 1955 — Pietro Ubaldi (Italian voice of Lugnut, Omega Supreme, Bulkhead, Boulder, Scowl, Maccadam and more) is born.
• 1960 — Musician Asakawa Tomoyuki ("Moero! Transformer") is born.
• 1963 — Oliver Mink (German voice of Cade Yeager) is born.
• 1966 — Jean-Pierre Michaël (French voice of Agent Schloder in Transformers: EarthSpark) is born.
• 1980 — Karine Foviau (French voice of Twitch in Transformers: EarthSpark) is born.
• 1985 — The Japanese Generation 1 OP/ED single "TRANSFORMER"/"Peace Again" is released by Victor Entertainment.
• 1985 — Lyrian (voice actress for Marissa Faireborn and others in the Kiss Players radio series) is born.
• 1987 — Andrea Oldani (Italian voice of Russell Clay) is born.
• 1993 — Andrea Rotolo (Italian voice of Blurr in the Season 3 redub) is born.
• 1999 — The Kid Rhino VHS tapes of The Original Transformers Volumes 1-3 are released in the US both individually and in a three-pack.
• 2001 — The Robots in Disguise episode "The Ultimate Robot Warrior" premieres in the US.
• 2005 — The first day of BotCon 2005 in Frisco, Texas.
• 2006 — The Cybertron episode "Optimus" premieres in the US.
• 2006 — The second issue of the Kiss Players manga is published.
• 2007 — The Transformers live-action movie begins its IMAX run with extra scenes not in the normal theatrical release.
• 2008 — The Animated episode "Sound and Fury" premieres in France.
• 2011 — The Transformers #26 is released by IDW Publishing.
• 2012 — The Transformers: Prime episode "Legacy" premieres on The Hub.
• 2012 — The Transformers: Prime episode "Operation: Breakdown" premieres in Indonesia
• 2012 — "Sand Trap" is first published by Eaglemoss/GE Fabbri in Russia.
• 2015 — The Robots in Disguise episode "Out of Focus" premieres in Hungary.
• 2015 — The Robots in Disguise episode "Similarly Different" premieres in Italy.
• 2015 — The Robots in Disguise episode "Ghosts and Impostors" premieres in Poland.
• 2015 — The Q-Transformers" episode "The Road to Q-Transformers Land Which Won't Lose to Puroland" first premieres.
• 2016 — Revolution #1 and Till All Are One #4 are released by IDW Publishing.
• 2016 — Final day of the Angry Birds Transformers mobile game's "Lock & Load" Challenge Event.
• 2017 — The Robots in Disguise episode "Prepare for Departure" premieres in France.
• 2018 — The Cyberverse episode "The Journey" airs on the Cartoon Network app and website.
• 2019 — The Rescue Bots Academy episodes "Hack Attack" and "Life of the Party" premiere on Discovery Family.
• 2019 — The Cyberverse episode "The Visitor" premieres on Cartoon Network.
• 2022 — Transformers: Best of Starscream is released by IDW Publishing.
• 2022 — Hasbro Pulse announces its expansion further in the EU being now available in France, Spain, Italy, and Austria.

September 22

• ???? — Akihiro Matsushima (Japanese voice of Divebomb and Righty) is born.
• 1937 — Armando Rendiz (Mexican voice of Beast Machines Megatron, Dimitri and Uncle Hank) is born.
• 1948 — Jim Byrnes (English voice of Beast Wars Inferno and Beast Machines Thrust) is born.
• 1959 — Alberto Olivero (Italian voice of Air Raid and Barricade) is born.
• 1961 — Supervising animator and Mainframe Entertainment co-founder Gavin Blair is born.
• 1970 — Katashi Ishizuka (Japanese voice of Tasmania Kid) is born.
• 1971 — Lorenzo Scattorin (Italian voice of Bulkhead, Wheeljack, Vertebreak, Slashmark, Heatwave and Wheeljack) is born.
• 1978 — Ángel Balam (Latin-American Spanish voice of Alpha Quintesson, Scourge, Clocker, Snarl) is born.
• 1983 — Wagner Follare (Brazilian voice of Fixit) is born.
• 1986 — Sayuri Yahagi (Japanese voice of Frenzy) is born.
• 1991 — The Victory episode "The New Combination Robot, Liokaiser" premieres in Malaysia.
• 1999 — The Beast Wars Neo episode "The Final Battle" premieres in Japan.
• 2001 — The 2001 Robots in Disguise cartoon episode "The Decepticons" premieres in the US.
• 2005 — Takara releases Galaxy Force GD-14 Master Galvatron and GX-02 Soundwave.
• 2005 — Galaxy Force—Vol. 04 is released on DVD in Japan by Victor Entertainment.
• 2005 — Second day of BotCon 2005.
• 2006 — The Cybertron episode "Showdown" premieres in the US.
• 2010 — The Transformers: Drift #2 is released by IDW Publishing.
• 2012 — TakaraTomy releases United EX Combatmaster, Jetmaster, and the Rollermaster vs Choppermaster set.
• 2012 — The Fight Super Robot Transformers: Prime episode "Rivals Transformation! Birth of the Strongest Combination" premieres in Japan.
• 2013 — Transformers: Dark of the Moon makes its Japanese television broadcast debut on TV Asahi.
• 2013 — The Transformers: Prime episode "Persuasion" premieres in France.
• 2015 — The Robots in Disguise episode "Even Robots Have Nightmares" premieres in Hungary.
• 2015 — The Robots in Disguise episode "One of Our Mini-Cons Is Missing" premieres in Brazil.
• 2015 — The Robots in Disguise episode "The Buzz on Windblade" premieres in Italy.
• 2015 — The Robots in Disguise episode "Battlegrounds, Part 1" premieres in Poland.
• 2016 — The Rescue Bots episode "Quarry's Quarry" premieres in Hungary.
• 2017 — The Robots in Disguise episode "Prisoner Principles" premieres in France.
• 2018 — The Cyberverse episode "The Journey" airs on Cartoon Network.
• 2019 — The Cyberverse episodes "Parley" and "Starscream's Children" premiere in France.
• 2020 — Hasbro PulseCon 2020 exclusives are made available for sale/preorder to "Pulse Premium" members on Hasbro Pulse; notably the "Quintesson Pit of Judgement" set.
• 2021 — Transformers #35 is released by IDW Publishing.
• 2021 — American Voice Actor Christopher Sabat hosts a livestream on his Twitter discussing HasLab's Star Saber project with with Amanda Granato and a main designer for Victory Saber, Evan Brooks with the Colored renders being revealed for the first time ever.
• 2022 — The Transformers: EarthSpark Bumblebee the Babysitter promo is uploaded.
• 2023 — The Hasbro Pulse Con 2023 virtual convention is held on YouTube.
• 2023 — The Transformers: EarthSpark episode "Home, Part 2" premieres in Canada on YTV.
• 2024 — The EarthSpark episode "Final Hope" premieres in Japan.

September 23

• 1846 — Neptune (the planet, not the combiner) is discovered by German astronomers.
• 1956 — Peter David (author of the Dark of the Moon novelization) is born.
• 1964 — Mauro Eduardo Lima (Brazilian voice of Ratchet, Angry Archer, Soundwave and Grimlock) is born.
• 1967 — Raúl Anaya (Mexican voice of Wheeljack, Blurr and Tarantulas) is born.
• 1972 — Masayuki Katō (voice of Lio Convoy and Smokesniper in Robotmasters) is born.
• 1975 — Rita Almeida (Brazilian voice of Adrias) is born.
• 1976 — IDW artist Andrew Griffith is born.
• 1985 — The Generation 1 episode "Autobot Spike" premieres in the US.
• 1990 — The Super-God Masterforce episode "The Birth of the Third Powermaster" premieres in Malaysia.
• 1996 — The Beast Wars episode "Equal Measures" premieres in the US.
• 1998 — The Beast Wars II episode "Enter Lio Junior" premieres in Japan.
• 2000 — The Beast Machines episode "Sparkwar Pt. I: The Strike" premieres in the U.S. on Fox Kids.
• 2002 — The Transformers — Complete Original Series: Deluxe Edition is released on DVD in the UK by Sony Wonder and Maverick Entertainment.
• 2003 — The Legends of the Microns episode "脅威 (ひゅどらきゃのん) - threaten" premieres in Japan.
• 2005 — The Transformers: Fallen Star TPB is published by Titan Books.
• 2005 — Third day of BotCon 2005.
• 2009 — Best of UK Omnibus is released by IDW Publishing.
• 2011 — The Transformers: Prime episode Darkness Rising, Part 1 premieres in Germany.
• 2013 — The Transformers Linkin Park Soundwave: Special Edition is released.
• 2014 — The Transformers Prime compilation DVD "Ultimate Autobots" is released in the US by Shout! Factory.
• 2015 — Windblade vol.2 #7 is released by IDW Publishing.
• 2015 — José Granadillo (2nd Latin-American Spanish voice of Cybertron Red Alert) dies at age 54 from cancer.
• 2015 — The Robots in Disguise episode "Some Body, Any Body" premieres in Hungary.
• 2015 — The Robots in Disguise episode "Ghosts and Impostors" premieres in Italy.
• 2016 — First day of the Angry Birds Transformers mobile game's "The Blues Brothers" Challenge Event.
• 2016 — The Rescue Bots episode "Did You See What I Thaw?" premieres in Hungary.
• 2017 — The Robots in Disguise episode "Prepare for Departure" premieres on Cartoon Network.
• 2020 — Transformers: The Definitive G1 Collection: Volume 97: G.I. Joe vs. Transformers, Part 3 is released by Hachette.
• 2020 — Hasbro PulseCon 2020 exclusives go up for sale/preorder on the Hasbro Pulse website; notably the "Quintesson Pit of Judgement" set, which sells out quickly, gets re-listed for pre-order, then pre-sells out quickly.
• 2021 — Marvel Productions executive David DePatie passes away.
• 2022 — The Buzzworthy Bumblebee 44BB Optimus Prime, 95BB N.E.S.T. Bonecrusher and N.E.S.T. Autobot Ratchet are officially revealed.
• 2022 — First Day of the Takara Tomy Hobby Expo in Akihabara Radio Hall in Kanda, Chiyoda-ku, Tokyo.
• 2022 — Transformers: Age of Extinction is released on DVD in Ecuador.
• 2023 —The Transformers: EarthSpark episode "Disarmed" premieres in France.
• 2023 —The Transformers: EarthSpark episode "Prime Time" premieres in Hungary.

September 24

• 1935 — Yuzuru Fujimoto (Japanese voice of Archibald Witwicky) is born.
• 1940 — Vincent Davy (Canadian French voice of Megatron in the live-action film series) is born.
• 1946 — Storyboard artist Joo In Kim is born.
• 1960 — Alberto Sette (Italian voice of Lander, Thunderhoof and Clout) is born.
• 1968 — Davide Garbolino (Italian voice of Headmasters Daniel Witwicky, Cancer, Blurr, Raf Esquivel and Bumblebee) is born.
• 1972 — Patrice Dubois (Canadian French voice of William Lennox) is born.
• 1978 — Actor Jason Sarcinelli (Alexander Powers in the Sector Seven ARG) is born.
• 1985 — The Transformers episode "The Immobilizer" premieres in the US.
• 1986 — Sahil Vaid (Hindi voice of Ultra Magnus in Transformers: War for Cybertron Trilogy) is born.
• 1988 — Transformers #185 - "Space Pirates! Part 4" is released in the UK by Marvel Comics.
• 1996 — The Beast Wars episode "Chain of Command" premieres in the US.
• 1999 — Beast Wars Special — Lio Convoy in Imminent Danger! is released on VHS in Japan by Pioneer LDC.
• 1999 — The Beast Wars Special is released on LaserDisc and DVD in Japan by Pioneer LDC.
• 1999 — Beast Wars Neo — ACT. 5 and ACT. 6 are released on VHS in Japan by Pioneer LDC.
• 2000 — The "3 S(uper) Car Robo Brother Set <Clear Version>", featuring exclusive versions of Super Mach Alert, Super Speedbreaker and Super Wildride, is sold at the Osaka Toys Land Show.
• 2001 — The Robots in Disguise (2001) episode "Commandos" premieres in the US.
• 2003 — More than Meets the Eye issue #6 is published in the US by Dreamwave Productions.
• 2004 — The Transformers: Trial By Fire TPB is released by Titan Books.
• 2005 — The Galaxy Force episode "Clash! The Crushed Ambition" premieres in Japan.
• 2005 — Fourth day of BotCon 2005 and the first one to be open to the public.
• 2007 — British MMORPG game Bin Weevils is launched.
• 2008 — The Animated short "Mime Time" is released through Hasbro's MonkeybarTV website.
• 2008 — The Animated episode "Lost and Found" premieres in France.
• 2011 — Masterpiece MP-10 Convoy and the "fixed" reissue of MP-09 Rodimus Convoy are released in Japan.
• 2011 — The Transformers: Prime episode "One Shall Fall" premieres on The Hub.
• 2011 — The Transformers: Prime episode Darkness Rising, Part 3 premieres in Italy.
• 2012 — The Transformers: Prime episode "Crisscross" premieres in Indonesia.
• 2014 — Robots in Disguise #33 is released by IDW Publishing.
• 2014 — Transformers Timelines #9 is released by Fun Publications.
• 2014 — Transformers Cloud: Spacetime World: Guardians of Time Chapter 4: Part 1 is first published.
• 2015 — The Robots in Disguise episode "One of Our Mini-Cons Is Missing" premieres in Hungary.
• 2015 — The Robots in Disguise episode "Battlegrounds, Part 1" premieres in Italy.
• 2016 — The Robots in Disguise episode "Pretzel Logic" premieres on Teletoon in Canada.
• 2016 — The Rescue Bots episode "The Attack of Humungado" premieres in Hungary.
• 2016 — TakaraTomy releases Masterpiece MP-14+ Alert Anime Colors Edition, Legends LG-27 Broadcast, LG-28 Rewind & Nightbeat, LG-29 Wheelie & Goshooter, LG-30 Weirdwolf, and LG-31 Fortress Maximus and Adventure TAV 55 Windblade and TAV 56 Nemesis Prime.
• 2018 — The official trailer for Bumblebee is uploaded by Paramount Pictures' YouTube channel.
• 2019 — The Transformers BotBots Official Sticker Book is published by Random House.
• 2021 — The Transformers: Cyberverse episodes "The Citizen" through "The End Of The Universe I" premiere in Brazil.
• 2022 — TakaraTomy releases MPG MPG-02 Trainbot Getsuei and Legacy TL-06 Laser Optimus Prime.
• 2022 — Second Day of the Takara Tomy Hobby Expo in Akihabara Radio Hall in Kanda, Chiyoda-ku, Tokyo.
• 2023 — The Transformers: EarthSpark episode "What Dwells Within" premieres in France.
• 2023 —The Transformers: EarthSpark episode "Stowed Away, Stowaways" premieres in Hungary.
• 2023 — The Beast Wars Again episode "Rhinox Rampages (Part 2)" airs on TV Tokyo, concluding the Beast Wars Again reruns.
• 2024 — Transformers One is theatrically released in Mexico.
• 2024 — A Transformers downloadable content pack is released for Minecraft.
• 2024 — Hasbro Pulse puts preorders up for Dramatic Capture Series Triple Takeover Starscream, Astrotrain and Blitzwing.
• 2025 — Void Rivals #23 and Codename: G.I. Joe Deluxe Edition Book 2 HC are released by Image Comics and Skybound Entertainment.
• 2025 — The Wild King episode "Proof of the Hero" premieres on the TakaraTomy YouTube channel.

September 25

• 3760 BCE — Universal stream Quadwal -3760.925 Theta comes into existence. (Allegedly.)
• 1951 — Mark Hamill (voice of Woodrow Burns in Rescue Bots and Megatronus in Titans Return) is birthed with the Force & Laughter. HUBOOM!.
• 1953 — Bob Layton is born.
• 1964 — Kikuko Inoue (Japanese voice of Zizza and War for Cybertron Trilogy Elita One) is born at the age of 17.
• 1971 — Kaori Tagami (voice of NAVI) is born.
• 1977 — Hiroshi Shimozaki (Japanese voice of Yoshimoto) is born.
• 1984 — Marisol Romero (Mexican voice of Sierra and Elita-1) is born.
• 1985 — Calvin Johnson is born.
• 1985 — The Generation 1 episode "Dinobot Island, Part 1" premieres in the US.
• 1987 — The Headmasters episode "The Dormant Volcano Mysteriously Erupts" premieres in Japan.
• 1990 — Agatha Paulita (Brazilian voice of Priscilla Pynch) is born.
• 1996 — The Beast Wars episode "Power Surge" premieres in the US.
• 1998 — Beast Wars II — ACT. 5 & ACT. 6 are released on VHS in Japan by Pioneer LDC.
• 1999 — The Beast Machines episode "Master of the House" premieres in the US.
• 2001 — The Robots in Disguise episode "Volcano" premieres in the US.
• 2003 — The Armada episode "Uprising" has its world premiere in the UK.
• 2005 — Final day of BotCon 2005.
• 2005 — The 15 Go! Go! chapter "Hot Rod Volume" is published in the November 2005 issue of Dengeki Hobby.
• 2006 — The 15 Go! Go! chapter "Starscream? Volume 3" is published in the November 2006 issue of Dengeki Hobby.
• 2006 — The 26th show in the Kiss Players radio drama series airs in Japan on the "Lyrian Moe-tchao" program.
• 2006 — The Cybertron episode "Guardian" premieres in the US.
• 2009 — Pre-orders end for the Japanese Toy Hobby Market exclusive release of Revenge of the Fallen Deluxe-Class Dead End.
• 2010 — The 7-11 exclusive Donald Duck Halloween Ver. toy is released in Japan.
• 2010 — The Animated episode "Enormous Power" premieres in Japan.
• 2010 — The Cool Episode 7 is serialized in Japan by Kerokero Ace in their November 2010 issue.
• 2011 — The Transformers: Prime episode "Darkness Rising, Part 4" premieres in Italy.
• 2012 — The Massive Fury Pack DLC is available for download for Fall of Cybertron.
• 2012 — The Transformers: Prime episode "Metal Attraction" premieres in Indonesia.
• 2013 — Beast Hunters #5, More than Meets the Eye #21, and Monstrosity #2 (second printing) are released by IDW Publishing.
• 2013 — The Transformers: Prime episode "Synthesis" premieres in France.
• 2016 — The Rescue Bots episode "All Bots Great and Small" premieres in Hungary.
• 2016 — The Robots in Disguise episode "Decepticon Island (Part 1)" premieres in Japan.
• 2017 — Blocksworld is released on PC via Steam.
• 2019 — Galaxies #1 is released by IDW Publishing.
• 2020 — The first day of the Hasbro PulseCon 2020 virtual convention on YouTube. No real Transformers content, though.
• 2020 — The Generations Selects Special Comic Volcanicus comic 2 is first published.
• 2021 — TakaraTomy releases War for Cybertron Trilogy WFC-17 Deep Cover.
• 2022 — Third and Final Day of the TakaraTomy Hobby Expo in Akihabara Radio Hall in Kanda, Chiyoda-ku, Tokyo.
• 2025 — TakaraTomy hosts a T-SPARK Livestream revealing numerous Transformers products.

September 26

• 1950 — Ren Tamura (voice of Archadis) is born.
• 1954 — Giorgio Locuratolo (Italian voice of Megatron, Brawn, Powerglide and more) is born.
• 1960 — Cyrille Monge (French voice of Starscream in the War for Cybertron video game) is born.
• 1964 — Hanna Chojnacka-Gościniak (Polish voice of D. Greene) is born.
• 1979 — Seon Ho-je (Korean voice of Denny Clay) is born.
• 1986 — The Fight! Super Robot Lifeform Transformers episode "Skyfire's Resurrection" premieres in Japan.
• 1989 — The Victory episode "Ginrai Dies!!" premieres in Japan.
• 1998 — The Beast Wars episode "Other Voices, Part 2" premieres in Germany.
• 2000 — João Vitor Granja (Brazilian voice of Russell Clay) is born.
• 2001 — The 2001 Robots in Disguise cartoon episode "The Test" premieres in the US.
• 2002 — Final day to pre-order the e-HOBBY exclusive Streak Silver Chrome toy.
• 2003 — The 2001 Robots in Disguise "urban camo" Ruination set is released in Japan as a "USA Edition" through stores participating in Toy's Dream Project's "Toycard" program.
• 2003 — The Armada episode "Dash" has its world premiere in the UK.
• 2003 — The Legends of the Microns episode "地球 (きき) - crisis" premieres in Japan.
• 2003 — The Transformers: Victory DVD BOX 01 is released in Japan by Pioneer LDC.
• 2004 — The auction for ~MAYUKO IWASA Edition~ Meister that began September 19 ends on Yahoo!Japan Auctions. It would be relisted on October 8 of the same year.
• 2005 — The Headmasters cartoon is released on DVD in the UK by Metrodome.
• 2006 — The Cybertron episode "Homecoming" premieres in the US.
• 2006 — Transformers Armada: Season One, Part Two is released on DVD in the US by Kid Rhino.
• 2011 — The Transformers: Prime episode "Convoy" premieres in South Korea.
• 2012 — The Transformers: Robots in Disguise Annual 2012 and The Transformers: More than Meets the Eye #9 are released by IDW Publishing.
• 2012 — Transformers: All Spark Episode 1 "The Fated Rival, Once Again..." is serialized in Japan by Kerokero Ace in their November 2012 issue.
• 2012 — The Transformers: Prime episode "Rock Bottom" premieres in Indonesia
• 2016 — The Rescue Bots episode "Time After Time" premieres in Hungary.
• 2017 — Transformers: The Last Knight is released on on DVD, Blu-ray, and 4K UHD in the United States by Paramount Pictures.
• 2018 — Lost Light #24 and Star Trek vs. Transformers #1 are released by IDW Publishing.
• 2018 — The Transformers Legends Spin Off Blue Big Convoy comic is first published.
• 2020 — TakaraTomy releases Masterpiece MP-50 Tigatron (Beast Wars), War for Cybertron Trilogy WFC-01 Decepticon Mirage and WFC-02 Autobot Hound, Studio Series SS-55 Soundwave and SS-56 Topspin and Earthrise ER-08 Doubledealer, plus ER EX-09 Ground Hog and Roller Force and ER EX-10 Snapdragon are released as TakaraTomy Mall exclusives.
• 2020 — The second day of the Hasbro PulseCon 2020 virtual convention on YouTube. Three different Transformers-themed panels are broadcast, including new toy reveals.
• 2020 — The Transformers: Cyberverse episode "The Loop" premieres in Germany.
• 2023 — Yolopark annouces the limited run of the AMK Pro Series G1 Megatron Golden Color Version to be sold at the Shanghai Wonder Festival 2023.
• 2024 — Transformers One is theatrically released in Brazil.
• 2025 — Transformers Hall of Fame voting for 2025 begins.
• 2025 — Target.com officially reveals the Masters Of The Universe X Transformers Optimus Prime Armor He-Man and both it and Starscream Armor Scare Glow go up for preorder.

September 27

• ???? — Tomokazu Yajima (Japanese voice of Buzzstrike) is born.
• 1932 — Roger C. Carmel (English voice of the original The Transformers cartoon Menasor, Cyclonus, and others) is born.
• 1943 — Enrico Bertorelli (Italian voice of Depth Charge and Cicadacon) is born.
• 1951 — Former Marvel Comics editor-in-chief Jim Shooter is born.
• 1962 — Musician Atsushi Yokozeki is born.
• 1966 — Writer David Bishop is born.
• 1972 — Shigeo Kiyama (Japanese voice of Saberhorn) is born.
• 1972 — Agnieszka Fajlhauer (Polish voice of Su Yueming, Glowstrike, Cyberwarp and Wingcode) is born.
• 1976 — Aurélie Konaté (French voice of Dot Malto in Transformers: EarthSpark) is born.
• 1979 — Alicyn Packard (voice of Windblade and Leila Vandermeer in Transformers: Beyond Reality) is born.
• 1985 — The Transformers episode "Traitor" premieres in the US.
• 1988 — The Super-God Masterforce episode "Life? Death? The Desperate Lightfoot" premieres in Japan.
• 1988 — Douglas Silva (Brazilian voice of Mirage in Rise of the Beasts) is born.
• 1989 — The Victory episode "Fight!! Victory Leo" premieres in Japan.
• 19?? — Eilias Changuel (French voice of Megatron in the Transformers: War for Cybertron Trilogy) is born.
• 1991 — Artist Christopher Colgin is born.
• 1992 — The Headmasters episode "King of Shadows, Scorponok" airs in Malaysia.
• 2000 — The Car Robots episode "Assemble! New Troops" premieres in Japan.
• 2001 — The Robots in Disguise episode "The Fish Test" premieres in the US.
• 2002 — The Armada episode "Soldier" premieres in the US.
• 2002 — The Transformers Collection reissues of Skids and Tracks are released in Japan.
• 2002 — The Transformers: Dark Designs TPB is released by Titan Books.
• 2003 — The Armada episode "Drift" has its world premiere in the UK.
• 2003 — The Armada episode "Base" premieres in France.
• 2003 — Powerlinx Cyclonus and the brown Powerlinx Thrust are released in Japan as LaOX-exclusive "USA Editions".
• 2006 — The Cybertron episode "End" premieres in the US.
• 2006 — BotCon 2006 check-in for Customizing Class and Thursday tour attendees begins. First Customizing Class starts.
• 2006 — Hearts of Steel #4 is released in the US by IDW Publishing.
• 2007 — Transformers: Generation 2 is released on DVD by Mundial Filmes in Brazil.
• 2008 — The Transformers Animated episode "Mission Accomplished" premieres in Latin America.
• 2008 — The Animated episode "Headmaster" premieres in France.
• 2011 — The Transformers: Prime episode "Deus ex Machina" premieres in South Korea.
• 2012 — The Transformers: Prime episode "Partners" premieres in Indonesia.
• 2014 — Canadian Toys"R"Us stores hold a Kre-O build-a-figure event, giving away the polybagged promotional Elite Optimus Prime kit.
• 2014 — The Vortexx programming block, which aired edited episodes of Transformers: Prime, makes its final broadcast in markets where the entire block was shown on Saturday mornings.
• 2015 — The Robots in Disguise episode "Even Robots Have Nightmares" premieres in Japan.
• 2016 — The Rescue Bots episode "Pirates Ahoy" premieres in Hungary.
• 2017 — First Strike #4, Micronauts: First Strike, Revolutionaries #8 and Rom vs. Transformers: Shining Armor #3 are released by IDW Publishing.
• 2018 — Fathom Events screens The Transformers: The Movie in theaters across the U.S.
• 2019 — The Cyberverse episode "Trials" premiere on the Cartoon Network app in the U.S..
• 2021 — The official reveal of and pre-orders go up for the Golden Disk Collection Autobot Puffer & Autobot Road Ranger 2 pack.
• 2022 — The Transformers: EarthSpark Dr. Meridian/Mandroid Sneak Peek promo is uploaded.
• 2023 — Void Rivals #4 is released by Image Comics and Skybound Entertainment.
• 2024 — Pre-orders open for Synergenex Transformers 40th × Monster Hunter 20th Anniversary Liolaeus Prime.
• 2025 — TakaraTomy releases MPG-15 Cybertron Rattle, Age of the Primes AOTP-11 Alchemist Prime, AOTP-12 Rescue Bots Heatwave, AOTP-13 Decepticon Trypticon, T-SPARK Silver Liolaeus Prime, and Missing Link C-07 Arcee (Prototype) and C-08 Arcee.

September 28

• 1946 — Reinaldo Pimenta (Brazilian voice of Mindwipe, Bill O'Reilly and Edmund Burton) is born.
• 1948 — José Lavat (Mexican voice of Unicron in Predacons Rising) is born.
• 1961 — Composer Takamune Negishi is born.
• 1961 — Marc Fayet (European French voice of Agent Burke) is born.
• 1963 — Animation writer Greg Weisman is born.
• 1966 — Dirc Simpson (German voice of Dinobot and Deseeus's Death Face in War for Cybertron Trilogy) is born.
• 1970 — Yūji Kishi (voice of Scuba and Drill Nuts) is born.
• 1974 — Reinaldo Vilela (Brazilian voice of Megatron) is born.
• 1977 — Xia Lei (Chinese voice of Cybertron Starscream) is born.
• 1980 — Thiago Zambrano (Brazilian voice of Fast Willy) is born.
• 1988 — Caio César (Brazilian voice of Carlos Lopez) is born.
• 2001 — The 2001 Robots in Disguise cartoon episode "Wedge's Short Fuse" premieres in the US.
• 2003 — The Armada episode "Portent" has its world premiere in the UK.
• 2004 — Victor Hugo Fernandes (Brazilian voice of Otis Watson) is born.
• 2006 — The Cybertron episode "Unfinished" premieres in the US.
• 2006 — BotCon 2006 officially begins. Preregistrant check-in, customizing class, and MSTF.
• 2006 — Kiss Players Figure Collection 1, featuring Atari x Autorooper, is released in Japan.
• 2006 — Takara releases Masterpiece MP-3 Starscream and MP-4 Convoy Perfect Edition.
• 2008 — The Animated episode "Megatron Rising - Part 1" premieres in France.
• 2011 — Fun Publications runs a contest on Twitter for fans to write Shattered Glass Scourge's bio, with a BotCon Sweep (officially repurposed to be Shattered Scourge) as the prize.
• 2012 — The Transformers: Prime episode "Alpha/Omega" premieres on The Hub.
• 2012 — The Transformers: Prime episodes "T.M.I." and "Stronger, Faster" premiere in Indonesia.
• 2012 — Final day to submit lottery codes to the TakaraTomy website's "Arms Up Campaign" contest, with prizes including Golden Optimus Prime and Golden Hades.
• 2012 — Transformers Prime — Vol. 4 and Transformers Prime — Vol. 5 are released to home media in Japan by Avex Trax.
• 2013 — TakaraTomy releases Masterpiece MP-17 Prowl, Transformers GT GT-04 GT-R Maximus, Generations TG23 Metroplex and Go! G20 Sensuimaru and G21 Judora.
• 2013 — The Transformers: Prime episode "Deadlock" premieres in France.
• 2015 — The Robots in Disguise episode "The Champ" premieres in Hungary.
• 2015 — The Q-Transformers" series finale "The Road to Q-Transformers: The Movie" first premieres.
• 2016 — The Transformers vol. 2 #57 and More than Meets the Eye #57 are released by IDW Publishing.
• 2016 — Final day of the Angry Birds Transformers mobile game's "The Blues Brothers" Challenge Event.
• 2016 — The Rescue Bots episode "Turning the Tide" premieres in Hungary.
• 2018 — The Cyberverse episode "Whiteout" airs on the Cartoon Network app and website.
• 2018 — The Transformers Trading Card Game releases to retail in United States.
• 2019 — The Cyberverse episode "Bring Me The Spark Of Optimus Prime" airs on Cartoon Network as well as in Germany and in Japan simultaneously.
• 2019 — The Cyberverse episode "The Visitor" premieres in Japan.
• 2019 — The Rescue Bots Academy episodes "Tyrannosaurus Wrecked" and "Dino Hard" air on Discovery Family.
• 2021 — The official reveal of and pre-orders go up for the Golden Disk Collection Autobot Jackpot with Sights.
• 2022 — Shattered Glass II #2 and The Transformers: The IDW Collection Phase Three: Volume 3 are released by IDW Publishing.
• 2024 — TakaraTomy officially releases MPG MPG-07 Ginou, TL-71 Cheetor, TL-72 Chromia, TL-73 Starscream and SS-129 Blaster with Eject.
• 2024 — The Transformers: EarthSpark episode "Aftermath" premieres on Nickelodeon in the United States.

September 29

• 19?? — Japanese voice actress Yuka Hoshi is born.
• 1945 — Reggie Bannister (English voice of a museum security guard in Transformers Prime) is born.
• 1947 — Hubert Gagnon (Canadian French voice of Optimus Prime and Rodimus Prime in the original The Transformers cartoon) is born.
• 1950 — Tom Deininger (German voice of Prime Alpha Trion) is born
• 1950 — Tetsuo Kanao (Japanese voice of Bruce Brazos) is born.
• 1957 — Massimo Corizza (Italian voice of Starscream, Blurr and First Aid) is born.
• 1958 — Musician Seiichi Kyōda is born.
• 1971 — Gábor Seder (Hungarian voice Cyclonus/Snow Cat, Ransack, Blades, Thunderhoof, Daytrader, Frostferatu, Alex Malto and more) is born.
• 1973 — Yasuhiro Kikuchi (Japanese voice of Vector Prime in Transformers: Adventure) is born.
• 1973 — Alessandra Merz (Brazilian voice of Breanna Díaz and Lesley Stahl) is born.
• 1980 — Josephine Schmidt (German voice of Bonz-Eye in Transformers: BotBots) is born.
• 1986 — The Transformers episode "The Killing Jar" premieres in the U.S.
• 1988 — Writer Kate Leth is born.
• 1991 — The Victory episode "The Long Struggle for Peace" premieres in Malaysia.
• 1993 — Lucrezia Marricchi (Italian voice of Elena Wallace) is born.
• 1999 — The series finale of Beast Wars Neo, "Graduation Ceremony!!", premieres in Japan.
• 1999 — Jean-Louis Millette (French Canadian voice of Generation 1 Starscream) dies in Montreal.
• 2001 — The Robots in Disguise (2001) episode "A Test of Metal" premieres in the US.
• 2003 — The Armada episode "Cramp" has its world premiere in the UK.
• 2005 — Takara releases Galaxy Force Megalo Convoy; Japanese Toys"R"Us stores offer the exclusive Mini-Con "Platinum Material" free with the purchase of Megalo Convoy.
• 2005 — The Megalo Micron campaign begins in Japan, featuring exclusive Mini-Cons Gritbit and Zapmap.
• 2005 — Bandai and Namco merge eventually becoming Bandai Namco Entertainment
• 2006 — The series finale of Cybertron, "Beginning", premieres in the U.S.
• 2006 — First full day of BotCon 2006. Panels, game night, advance screening of the new The Transformers: The Movie 20th Anniversary DVD.
• 2010 — Transformers: Sector 7 #1 is released by IDW Publishing.
• 2010 — Cyber Missions episodes 11, 12, and 13 all go up on The Hub's website, along with the rest of the series.
• 2012 — TakaraTomy releases Prime Gaia Unicron, Ironhide, and Arms Master Optimus Prime, and AMW Arms Microns Zori, B.H., and Arc. The Rainbow Shield Arms Microns (R.A. in four different colors of clear plastic) are given away as promotions at different stores.
• 2012 — The Fight Super Robot Lifeform Transformers: Prime episode "Sealed Transformation! The Mystery of Orion Pax" premieres
• 2015 — The Robots in Disguise episode "The Trouble with Fixit" premieres in Hungary.
• 2016 — The Rescue Bots episode "The Last of Morocco" premieres in Hungary.
• 2017 — The Rescue Bots episodes "Part-Time Heroes" and "The More Things Change..." premiere in Italy.
• 2018 — TakaraTomy releases Masterpiece MP-17+ Prowl Anime Colors Ver. and Power of the Primes PP-28 Solus Prime, PP-29 Decepticon Battleslash, PP-30 Roadtrap, and PP-31 Predaking.
• 2018 — The Cyberverse episode "Whiteout" airs on Cartoon Network.
• 2019 — The Cyberverse episodes "Spotted" and "Secret Science" premiere in France.
• 2019 — The Rescue Bots Academy episode "Blame Game" premieres in Latin America.
• 2021 — HasLab's Star Saber project passes its end goal of 11000 backers, officially confirming its production.
• 2021 — The official reveal of and pre-orders go up for the Golden Disk Collection Mutant Tigatron.
• 2021 — Transformers Halloween Special and Shattered Glass #2 are released by IDW Publishing.
• 2021 — Ravil Isyanov (Alexi Voskhod in Dark of the Moon) dies at age 59 from cancer.
• 2022 — New Zealand MINT announces the Transformers G1 Optimus Prime 1oz silver coin.
• 2023 — CBR publishes an article officially revealing the EarthSpark Cyber-Combiners and Battle Blaster Toys.
• 2023 — The Power Rangers television series concludes after three decades of broadcasting.
• 2024 — The EarthSpark episode "Fight! Transformers!" premieres in Japan, concluding the shows Japanese dub broadcast run.
• 2024 — Final day of the Transformers Expo 2024 in Tokyo, Japan.
• 2024 — Jaime Collepardo (Mexican voice of Aftermath and Ironhide) dies at age 43.

September 30

• 1939 — Len Cariou (Uncle Hank in Bumblebee) is born.
• 1944 — Writer Susan K. Williams is born.
• 1951 — Lyricist Machiko Ryū is born.
• 1956 — Manuel Tadros (Canadian French voice of Ironhide and Dr. Powell in the live-action film series) is born.
• 1957 — Kei Majima (voice of Crazybolt) is born.
• 1959 — Mario Bombardieri (Italian voice of Kup, Alpha Quintesson, Constructicon Maximus, Crumplezone, Soundwave and Galvatron) is born.
• 1970 — Yūto Kazama (Japanese voice of Snarl and Menasor) is born.
• 1970 — Tony Hale (JPL Engineer from The Last Knight) is born.
• 1974 — Belgian actor Frederik Haùgness is born.
• 1981 — Choi Seung-hoon (Korean voice of Fixit) is born.
• 1982 — Lacey Chabert (voice of Dani Burns) is born.
• 1985 — The Transformers episode "Enter the Nightbird" premieres in the U.S.
• 1986 — The Transformers episode "Chaos" premieres in the U.S.
• 1988 — Isabela Dentini (Brazilian voice of Arcee) is born.
• 1990 — The Super-God Masterforce episode "Sixshot the Vagabond" premieres in Malaysia.
• 1990 — Susana Cohe (Mexican voice of Mischa) is born.
• 1991 — Illustrator Cachét Whitman is born.
• 1996 — The Beast Wars episode "Fallen Comrades" premieres in the U.S.
• 1996 — The Headmasters Set is released on Laserdisc in Japan by Takara.
• 1998 — The Beast Wars II episode "Megastorm Reborn" premieres in Japan.
• 2000 — Isabella Guarnieri (Brazilian voice of Hank) is born.
• 2002 — Pre-orders close for the e-HOBBY exclusive Megaplex toy.
• 2004 — Takara releases Super Link SC-23 Hot Shot Fire, SC-24 Roadbuster Wild, SC-25 Skyfire Sonic, SC-26 Superion, SD-19 Nightscream Reverse, and SD-20 Galvatron General.
• 2006 — BotCon 2006 continues. Dealer room opens, panels, "casino night" and dinner.
• 2008 — The MH-53 Pave Low helicopter (Blackout's alternate mode in Transformers) is officially retired from active service in the United States Air Force.
• 2010 — Miroslav Bijelić (Serbian voice of Soundwave) passes away at age 73.
• 2011 — Dark of the Moon is released on DVD and Blu-Ray disc in the US by Paramount Pictures.
• 2011 — The Transformers: Prime episode Darkness Rising, Part 2 premieres in Germany.
• 2013 — The Transformers: Prime episode "Darkmount, NV" premieres in Germany.
• 2014 — Age of Extinction is released on DVD and Blu-Ray disc in the US by Paramount Pictures.
• 2014 — Peter Cullen and Optimus Prime attend a cement printing ceremony outside of Grauman's Chinese Theater, immortalizing their hand (and tire) prints in cement for the Hollywood Walk of Fame.
• 2015 — The Transformers (vol.2) #45 and More than Meets the Eye #45 are released by IDW Publishing.
• 2015 — The announced shutdown date for the Transformers Legends mobile game. The servers remained up and running up through October 6.
• 2015 — The Transformers: Age of Extinction mobile game shuts down.
• 2015 — The Robots in Disguise episode "Lockout" premieres in Hungary.
• 2015 — Caio César (Brazilian voice of Carlos Lopez) dies at age 27.
• 2016 — The Rescue Bots episode "The New Recruits" premieres in Hungary.
• 2017 — The Robots in Disguise episode "Prisoner Principles" premieres on Cartoon Network.
• 2017 — TakaraTomy releases Legends LG-44 Sharktron and Sweeps, LG-45 Targetmaster Hot Rodimus (with Firebolt), and LG-46 Targetmaster Cher (with Recoil) and rereleases Movie The Best MB-EX Laserbeak.
• 2018 — The Cyberverse episode "Megatron Is My Hero" airs on Teletoon in Canada.
• 2019 — TakaraTomy releases Siege SG-29 Autobot Smashdown, SG-30 Decepticon Blackjack & Hyperdrive, SG-31 Red Alert, and SG-32 Autobot Springer.
• 2019 — Marshall Efron (voice of Hun-Grrr (Beast mode) dies at age 81.
• 2020 — Transformers vs. The Terminator #4 is released by IDW Publishing.
• 2021 — The official reveal and pre-orders go up for Kingdom Golden Disk Collection Terrorsaur.
• 2022 — The first day of the Hasbro Pulse Con 2022, The Legacy: Evolution toyline first wave as well as Shattered Glass Collection Soundwave (with Ravage and Laserbeak is officially revealed and pre-orders go up for it.
• 2023 — TakaraTomy releases MPG MPG-05 Trainbot Seizan, Transformers: Legacy TL-36 Thundercracker, TL-37 Nemesis Prime, TL-38 Senator Crosscut, TL-39 Crashbar, TL-40 Twincast and Studio Series SS-110 Ironhide, SS-111 Dinobot Snarl and Beast Wars: Super Lifeform Transformers Again BWVS-02 Tough Showdown: Rhinox VS Scorpos.
• 2023 —The Transformers: EarthSpark episode "Prime Time" premieres in France.
• 2023 —The Transformers: EarthSpark episode "The Battle of Witwicky" premieres in Hungary.
• 2025 — Preorders for the Threezero DLX BB Starscream & MDLX Thrust go up.