May
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May, is the fifth month of the year in the Gregorian calendar and the month that MediaWiki was founded! It is truly a month with force. The following events took place in the month of May:
- 1947 — Jean-Marie Moncelet (Canadian French voice of John Keller and Sir Edmund Burton) is born.
- 1962 — The Dayton Company opens up the first ever Target retail store in Roseville, Minnesota.
- 1965 — Johannes Berenz (German voice of Isaac Sumdac and Master Disaster) is born.
- 1966 — Charlie Schlatter (voice of Vertebreak on Robots in Disguise (2015)) is born.
- 1966 — Ted Biaselli (voice of Octopunch in Robots in Disguise (2015) as well as Netflix producer for War for Cybertron Trilogy) is born.
- 1970 — Jérôme Pauwels (European French voice of Ron in the Bumblebee movie) is born.
- 1970 — Beata Jankowska-Tzimas (Polish voice of Misha Miramond and Dani Burns) is born.
- 1976 — Darius McCrary (the voice of Jazz in Transformers) is born.
- 1977 — Christian Lanz (voice of Dark of the Moon Breakaway) is born.
- 1977 — Frank Todaro (voice of Starscream and others in Prime Wars Trilogy and War For Cybertron Trilogy) is born.
- 1985 — Nicolás Artajo (German voice of Noah Díaz) is born.
- 1987 — Fernando Ferraz (Brazilian voice of Starscream) is born.
- 1995 — Xebec is founded.
- 1997 — Jake Foushee (voice of Optimus Prime in Cyberverse and War for Cybertron Trilogy) is born.
- 1997 — JW Stafford (voice of Hound in War for Cybertron Trilogy) is born.
- 2002 — Earl Hammond (voice of Megatron in the Kid Stuff audiobooks) dies of heart failure at age 80.
- 2002 — The Nicktoons Network is launched.
- 2003 — JUSCO stores in Japan offer a special release of Legends of the Microns MC-01 Convoy Super Mode with one member of the Destruction Micron Space Galaxy Edition blind-packed inside. Yes, blind-packed.
- 2003 — Legends of the Microns—Volume 1 is released on DVD in Japan by Columbia Music Entertainment, coming with the "Linkage Part 1" mini-comic and exclusive Super Stunt Team toys.
- 2006 — The fifth show in the Kiss Players radio drama series airs in Japan on the "Lyrian Moe-tchao" program.
- 2009 — "Eye in the Sky" is released on the Fun Publications Transformers Collectors' Club members' only site.
- 2009 — Pre-orders for the Revenge of the Fallen preview Bumblebee/Legends Mudflap and preview Soundwave/Legends Fallen exclusive 2-packs open at Lawson's convenience stores in Japan.
- 2010 — The Transformers Animated episode "Don't Wipe Away the Memories" premiers in Japan.
- 2011 — Preorders open for the Japanese Lawson-exclusive "Darkside Optimus Prime" figure and Optimus Prime metal strap.
- 2012 — The Transformers Japanese Collection: Super-God Masterforce DVD set is released in the US by Shout! Studios.
- 2013 — Spotlight: Hoist, Regeneration One Volume 2 TPB and a second printing of Spotlight: Megatron are released by IDW Publishing.
- 2016 — The Robots in Disguise episodes "Impounded" and "Portals" premieres in France.
- 2018 — Hasbro announces their plan to purchase the rights of the Power Rangers franchise from Saban Brands.
- 2018 — The Power of the Primes episode "The Swamp" premieres on go90 and Tumblr.
- 2019 — Transformers #4 is released by IDW Publishing. Transformers: The Definitive G1 Collection Volume 15: Time Wars is released by Hachette Paperworks.
- 2021 — The Rescue Bots Academy episodes "The Tracker" and "One of Our Dragons is Missing" premieres in the United States.
- 2023 — Airheads begins its Transformers Rise Of The Beasts "Maximize Your Summer" Promotional Campaign.
- 2025 — Nemesis Now unveils their Optimus Prime Bookends.
- 2025 — Artist Butch Guice dies at age 63.
- 1944 — On Yeong-sam (Korean voice of Ultra Magnus in The Transformers, Ironhide, and Primus in Cybertron) is born.
- 1967 — Oliver Feld (German voice of Hot Rod) is born.
- 1968 — Hikaru Midorikawa (voice of Doryu) is born.
- 1972 — Dwayne "The Rock" Johnson (voice of Cliffjumper in Prime) is born. The doctor thinks he's cute, but it doesn't matter what he thinks!!!
- 1972 — Martin Sabel (German voice of Mandroid in EarthSpark) is born.
- 1983 — Florian Clyde (German voice of Jetfire in War for Cybertron Trilogy) is born.
- 1985 — NASCAR driver Kyle Busch is born.
- 1986 — The Transformers episode "The Key of Vector Sigma PART I" premieres in Japan.
- 1998 — The Beast Wars episode "Transmutate" gets its regular syndication debut in the US.
- 2003 — Japanese Hello Mac stores offer the Land Military Micron Ultimate Edition toys (Bomb, Crack, and Shot), a complete set of three free with the purchase of Legends of the Microns MC-01 Convoy Super Mode or MD-01 Megatron.
- 2003 — The Legends of the Microns episode "策略 (いんぼう) - conspiracy" premieres in Japan.
- 2005 — The Hasbro Toy Shop site officially launched.
- 2005 — Universal / Right releases Armada — Triple Collection on DVD in the UK.
- 2007 — Escalation #6 and Movie Prequel #4 are released by IDW Publishing.
- 2009 — Free Comic Book Day: Animated: The Arrival #5: Survival Skills is released by IDW Publishing.
- 2009 — The Animated episode "Decepticon Air" premieres in the US.
- 2015 — Free Comic Book Day: Robots in Disguise #0 is released by IDW Publishing.
- 2015 — The Rescue Bots episode "Rescue Bots Academy" premieres on Discovery Family.
- 2015 — The Robots in Disguise episode "Collect 'Em All" premieres on Cartoon Network in the US.
- 2016 — The Robots in Disguise episode "Three Against One" premieres in Hungary.
- 2018 — The Definitive G1 Collection Volume 30: War Within: The Dark Ages is released by Hachette Partworks.
- 2018 — Transformers vs. Visionaries #5 and Scarlett's Strike Force TPB are released by IDW Publishing.
- 2020 — Hasbro CEO Brian Goldner confirmed that Paramount Pictures had slated the release of a new Transformers live-action movie for June 24, 2022.
- 2020 — The Rescue Bots Academy episodes "The Great Energon Rush" and "The Vault Of The Primes" premiere on Discovery Family.
- 2023 — Hasbro officially reveals the Legacy: Evolution Decepticon Nemesis, and pre-orders go up for it.
- 2024 — ScreenRant officially reveals the One Power Flip Optimus Prime, while CBR reveals the Cog Changers & Robot Battlers.
- 2025 — The Exciting Battle! Wildocking! episode ""Thunder+Water vs Fire+Nature": Who Will Win?" is released on the TakaraTomy YouTube channel.
- 2026 — Free Comic Book Day: Energon Universe 2026 Special is released by Image Comics and Skybound Entertainment.
- 2026 — The Cyberworld episode "Everybody Dance, Ow!" premieres on YouTube.
- 1933 — James Brown, "The Godfather of Soul" is born feeling good and living in America.
- 1939 — Writer Denny O'Neil is born. His mother wants to name him Ulchtar, but settles on Dennis.
- 1966 — Serge Faliu (French voice of Jetfire in the War for Cybertron Trilogy, Frostferatu in BotBots and Mandroid in Earthspark) is born.
- 1977 — Imari Williams (voice of Boulder) is born.
- 1984 — Artists René & Michel Koiter are born in San Rafael, Argentina.
- 1988 — The Super-God Masterforce episode "Birth! Headmaster Jrs" premieres in Japan.
- 1998 — The Beast Wars episode "Chain of Command" premieres in Germany.
- 2000 — The Beast Machines series finale "Endgame Pt. III: Seeds of the Future" premieres in Canada on YTV.
- 2000 — The Car Robots episode "Deadly Jump! Mach Alert" premieres in Japan.
- 2003 — Free Comic Book Day: The free Armada comic is released by Dreamwave Productions.
- 2003 — The Armada episode "Mars" premieres in the US.
- 2004 — The Armada books The Uprising and The Unicron Battles are published in the US by DK Publishing.
- 2004 — The Transformers — Season 2 Part 2 is released on DVD in the UK by Metrodome.
- 2008 — Free Comic Book Day: A free preview of the first Animated comic is released by IDW Publishing.
- 2008 — The Transformers Animated episode "Garbage In, Garbage Out" premieres in Canada.
- 2008 — The Transformers Animated episode "Mission Accomplished" premieres in the US.
- 2008 — The Animated episode "Transform and Roll Out Part 1" premieres in Germany.
- 2010 — Hasbro announces the first nominee in the Transformers Hall of Fame for 2010: Soundwave.
- 2014 — Free Comic Book Day: Transformers vs. G.I. Joe #0 is released by IDW Publishing.
- 2014 — The "Convoy [Anniversary Clear Ver.]" toy is made available at a "Kids Walk" event at Fuji Speedway in Japan.
- 2014 — The Rescue Bots episode "What Rises Above" premieres on Hub Network.
- 2016 — "Autobot World Tour" is released by LB Kids.
- 2016 — The Robots in Disguise episode "Overloaded, Part 2" premieres in Hungary.
- 2017 — Till All Are One #9 and G.I. Joe #5 are released by IDW Publishing.
- 2017 — Transformers: Robots in Disguise — "Decepticon Island" is released on home media by Beyond Home Entertainment in Australia.
- 2017 — Transformers: The Definitive G1 Collection: Volume 21: Regeneration One is released by Hachette Partworks.
- 2020 — The Transformers: Cyberverse episodes "Enemy Line" and "Thunderhowl" premieres in the US
- 2022 — It's a Transformers Tuesday, Hasbro officially reveals the Target exclusives Red Cog and Buzzworthy Bumblebee Dinobot and Terrorsaur.
- 2024 — The EarthSpark episode "Prime Time" premieres on YTV in Canada.
- 2024 — Jörg Hengstler (German voice of Scrapper) dies at age 68.
- 2025 — Free Comic Book Day: Energon Universe 2025 Special and Transformers: Worst Bot Ever Special are released by Image Comics and Skybound Entertainment.
- 2025 — The EarthSpark episode "Aftermath" premieres in Cantonese.
- ???? — Lourdes Arruti (Mexican voice of the NPC Narrator) is born.
- Every year — Star Wars Day, as observed by the humans of Axiom Nexus. Andromeda - Axiom Nexus News, 2016/05/04
- 1940 — Comic artist John Ridgway is born.
- 1954 — Masashi Ebara (Japanese voice of a load of Fight! Super Robot Lifeform Transformers [2010] cartoon characters, including Ratchet, Teletraan I and adult Spike Witwicky) is born.
- 1973 — Cristiana Rossi (Italian voice of two Windblades) is born.
- 1973 — Hélène Bizot (European French voice of Maggie Madsen) is also born.
- 1973 — Storyboard artist Lynell Forestall is born.
- 1978 — Daisuke Ono (Japanese voice of Backbite) is born....yare yare daze.
- 1998 — Sony Wonder buys Sunbow Productions from Griffin-Bacal Advertising.
- 2006 — Composer Masahiro Kawasaki passes away.
- 2007 — The Transformers Collectors' Club members-only site releases online bios for the Mini-Cons Astro-Hook, Astro-Line, Astro-Sinker, Claymore and Overwatch.
- 2009 — Burger King announces their Revenge of the Fallen promotions, including the BBQ Double Stackticon!
- 2010 — Hasbro announces the second nominee in the Transformers Hall of Fame for 2010: Grimlock.
- 2011 — Rising Storm #4 is released by IDW Publishing.
- 2016 — More than Meets the Eye Volume 9 TPB is released by IDW Publishing.
- 2016 — The Robots in Disguise episode "Suspended" premieres in Hungary.
- 2022 — Beast Wars #15 and Transformers: Best of Hot Rod are released by IDW Publishing.
- 2024 — Free Comic Book Day: Energon Universe 2024 Special is released by Image Comics and Skybound Entertainment.
- 1940 — Lance Henriksen (voice of Animated Lockdown) is born.
- 1947 — Sanryō Odaka (voice of Apache) is born.
- 1950 — British comic artist David Lloyd is born.
- 1957 — Sergio Romanò (Italian voice of Beast Wars Ravage and two Grimlocks) is born.
- 1960 — Lee Seon-ho (Korean voice of Carlos Lopez) is born.
- 1964 — Minami Takayama (voice of Ryōma Sakamoto) is born.
- 1965 — Kiyoyuki Yanada (Japanese voice of Beast Wars Depth Charge and Legends of the Microns Megatron) is born.
- 1967 — Takehito Koyasu (Japanese voice of Optimus Primal, Speed King, Adventure Ratchet and Optimus Prime) is born.
- 1972 — Laurent Maurel (European French voice of King Arthur in The Last Knight and French voice of Mirage in the War for Cybertron Trilogy) is born.
- 1977 — Actor Frederic Doss is born.
- 1978 — Actor Santiago Cabrera (Santos in The Last Knight) is born.
- 1985 — Shōko Nakagawa (Japanese voice of Tessa Yeager) is born.
- 1986 — Felix Isenbügel (German voice of Clout and Whirl) is born.
- 1989 — The Transformers episode "The Rebirth, Part 2" premiers in Germany.
- 1991 — The Victory episode "The Birth of a Monster" premieres in Malaysia.
- 1991 — Japanese voice actor Takaaki Torashima is born.
- 1999 — The Beast Wars episode "Other Victories" premieres in the US.
- 1999 — The Beast Wars Neo episode "Ship's Log" premieres in Japan.
- 2004 — Dreamwave releases the third issue of the Armada More than Meets the Eye profile collection.
- 2004 — The first printing of Transformers: The Ultimate Guide is published in the US by DK Publishing.
- 2007 — Free Comic Book Day: A free preview comic of the Official Movie Prequel is released by IDW Publishing.
- 2009 — "Fight for Energon" is released on Hasbro's MonkeybarTV streaming video site.
- 2009 — Transformers Animated — Volume Two: Lost and Found is released in Australia by Paramount.
- 2010 — Hasbro announces the third nominee in the Transformers Hall of Fame for 2010: Jazz.
- 2010 — Nefarious #3 and the Transformers Movie Collection Volume 2 are released by IDW Publishing.
- 2012 — Free Comic Book Day featuring Simon Furman's Regeneration One #80.5.
- 2012 — The Transformers: Prime episode "Tunnel Vision" and Transformers: Rescue Bots episode "Deep Trouble" premiere on The Hub.
- 2013 — Final day of voting in the first of two online polls in Hasbro's "Fan-Built Bot" program, which would ultimately produce Windblade.
- 2013 — The Transformers: Rescue Bots episode "Rules and Regulations" premieres in Brazil.
- 2015 — The Robots in Disguise books Bumblebee Versus Scuzzard and Sideswipe Versus Thunderhoof hit bookstores.
- 2016 — The Robots in Disguise episode "Cover Me" premieres in Hungary.
- 2018 — Free Comic Book Day: Unicron #0 is released by IDW Publishing.
- 2022 — Hasbro Publishes Its Transformers Franchise Statements Via 2021 Annual Report and the 2022 Proxy Statement for the general public to read.
- 2023 — Pauline Newstone (voice of Airazor in Beast Wars) passes away at age 79.
- 2024 — The Transformers: EarthSpark episode "Teach Me Megatron" premieres in Japan.
- 2026 — Yolopark officially reveals the AMK Mini Decepticon Avatar Megatron
- 1915 — Orson Welles (voice of Unicron in The Transformers: The Movie) is born. Spoilers: he wants his sled.
- 1936 — Jean-François Poron (French voice of Optimus Prime in The Transformers: The Movie) is born.
- 1949 — Yū Shimaka (Japanese voice of Thundercracker & Shockwave, Scourge, and many others in The Transformers) is born.
- 1961 — Wally Wingert (voice of Side Burn in Robots in Disguise and Mirage) is born. Riddle Me This!
- 1964 — Lucien Jean-Baptiste (European French voice of Glen Whitmann) is born.
- 1968 — Animator and director C. Michael Easton is born.
- 1974 — Matthew Yang King (voice of Unicron in Transformers as well as Simacore) is born.
- 1974 — Mónica Estrada (Latin-American Spanish voice of Una) is born.
- 1976 — Jiang Guangtao (Chinese voice of Rad White and Sam Witwicky) is born.
- 1982 — Anne Düe (German voice of Strongarm) is born.
- 1992 — Fanny Dreiss (French voice of Shadow Striker, Chromia, Acid Storm and Nova Storm in Cyberverse) is born.
- 1997 — Yuneidy Reyes (Venezuelan voice of Elita and Airachnid in Transformers One: New Adventures) is born.
- 1998 — The Beast Wars II episode "Mystery of the Ancient Ruins" premieres in Japan.
- 1999 — The Beast Wars episode "Nemesis Part 1" premieres in the US.
- 2006 — Free Comic Book Day: A free comic previewing four different series is released by IDW Publishing.
- 2008 — The Transformers Animated books Attack of the Dinobots!, How to Draw, Robot Roll Call, and the coloring and activity book are released in the US.
- 2009 — Best of UK: City of Fear #4 is released by IDW Publishing.
- 2010 — Hasbro announces the fourth nominee in the Transformers Hall of Fame for 2010: Shockwave.
- 2010 — Michael Telloke (German voice of Savage/Noble in Beast Machines) passes away.
- 2011 — Willy Schäfer (German Generation 2 voice of Skywarp, Warpath, Cyclonus and others) dies at age 78.
- 2013 — The Transformers: Rescue Bots episode "The Lost Bell" premieres in Brazil.
- 2014 — The Transformers Energon: The Complete Series DVD set is released in the US by Shout! Studios.
- 2016 — Miguel Rosenberg (Brazilian voice of Archibald Witwicky) dies at age 90.
- 2016 — The Robots in Disguise episode "Brainpower" premieres in Hungary.
- 2021 — Osvaldo Trejo Rodríguez (Mexican voice of War for Cybertron Trilogy Soundblaster) dies at age 32 from complications from COVID-19.
- 2023 — Hasbro Pulse launches in Hong Kong, Singapore & Malaysia.
- 2023 — The EarthSpark episode "Traditions" premieres in Cantonese.
- 2026 — Energon Universe 2026 Special and Transformers Volume 5: Generation One TPB are released by Image Comics and Skybound Entertainment.
- 2026 — TakaraTomy uploads the "Business Trip! Wild King Research Institute - Episode 14 -" to YouTube.
- 1952 — Writer Jeffrey Scott is born.
- 1955 — Gerald Schaale (German voice of Rattrap, Blurr, Mudflap, Ezra Greene, Fixit and Teknicus) is born.
- 1957 — Humberto Solórzano (Mexican voice of Tom Banachek, Silas, Heatwave, Cogman, Optimus Primal and more) is born.
- 1970 — Gilles Morvan (European French voice of Ironhide in Revenge of the Fallen and Dark of the Moon) is born.
- 1976 — Tristan Petitgirard (voice of many many minor roles in the European French dubs of the live-action films) is born.
- 1977 — Writer and Devil's Due Press founder and CEO Josh Blaylock is born.
- 1981 — Jeremy Levy (voice of Cyberverse Bumblebee, Jetfire, Perceptor, Rack'n'Ruin and many others) is born.
- 1982 — Hannamaija Nikander (Finnish voice of Override) is born.
- 1982 — Jun Ichikawa (Italian voice of Su Yueming) is born.
- 1985 — J. Balvin is born.
- 1986 — Felipe Zilse (Brazilian voice of Sawtooth and Tricerashot) is born.
- 1987 — The Fight! Super Robot Lifeform Transformers 2010 episode "Human Transformers" airs in Japan.
- 1994 — The Generation 2 episode "More than Meets the Eye, Part 2" premieres in Germany.
- 1999 — The series finale of Beast Wars, "Nemesis Part 2", premieres in the US.
- 2003 — Lyricist Kayoko Fuyumori passes away.
- 2004 — The Transformers PlayStation 2 game by Melbourne House is released in the UK.
- 2005 — The Galaxy Force episode "Scorching Dead Heat" premieres in Japan.
- 2008 — The Reign of Starscream #1 and Best of UK: Dinobots TPB are released by IDW Publishing.
- 2010 — Hasbro announces the fifth and final nominee in the Transformers Hall of Fame for 2010: Dinobot.
- 2011 — The Transformers: Prime episode "Out of His Head" premieres on The Hub.
- 2012 — The Rescue Bots episode "Bumblebee to the Rescue" premieres in Brazil.
- 2013 — Optimus Prime versus Predaking is published by Little, Brown and Company.
- 2015 — Transformers Prime: Beast Hunters — "Staffel 3 Teil 1: Schlacht um Darkmount" is released to home media by Primal Screen in Germany.
- 2016 — The Rescue Bots episode "Plus One" premieres on Discovery Family.
- 2016 — The Robots in Disguise episode "Decepticon Island (Part 1)" premieres on Cartoon Network in the US.
- 2020 — Final day of preorders on TakaraTomy Mall for Generations Selects Super Megatron
- 2023 — The Beast Wars Again episode "Cheetus's Crisis (Part 2)" airs on TV Tokyo.
- 2024 — ajaguiar.com reveals the EarthSpark Warrior Class Terran Hashtag and Chaos Terran Spitfire.
- 2025 — Final day to back Skybound Entertainment's Kickstarter to produce a hardcover release of The Transformers Compendium.
- 1912 — Paramount Pictures, the company that co-produces and distributes the live-action film series with DreamWorks is founded.
- 1930 — Edgar Fruitier (Canadian French voice of Doctor Arkeville, Grimlock, Predaking, and Sparkplug Witwicky) is born.
- 1941 — Roberto Alexander (Latin American Spanish voice of Bumblebee, Star Saber and so much more) is born.
- 1967 — Voice actor Jack Merluzzi is born.
- 1972 — Brian Tyler (composer of Transformers: Prime and Transformers One) is born
- 1976 — Robert Jarociński (Polish voice of Heatwave, Dropforge, Razorpaw, Unicron and Darkwing) is born.
- 1976 — Akari Higuchi (Japanese voice of Viviane Wembly) is born.
- 1980 — Takanori Hoshino (Japanese voice of Shockwave in Transformers One) is born.
- 1984 — Marvel Comics ships The Transformers #1 (with a cover date of September).
- 1985 — Writer Geneva Robertson-Dworet is born.
- 1986 — Abby Trott (voice of Windblade in the Prime Wars Trilogy) is born.
- 1996 — Lucas Wecker (German voice of Mirage in Rise of the Beasts, Doublecrosser and Sprinkleberry D'uhnut) is born.
- 1999 — Ed Gilbert (voice of Generation 1 Blitzwing, Superion, and Thrust) dies of lung cancer at age 67.
- 2001 — The Original Transformers — Heroes: The Rebirth & Villains: The Ultimate Doom are released on VHS and DVD in the U.S. by Kid Rhino.
- 2002 — Generation 1: Prime Directive #2 is released by Dreamwave Productions
- 2006 — The sixth show in the Kiss Players radio drama series airs in Japan on the "Lyrian Moe-tchao" program.
- 2008 — "Withered Hope" is released through the Fun Publications Transformers Collectors' Club members-only site.
- 2010 — The Animated episode "The Immortal Megatron" debuts in Japan.
- 2013 — The Rescue Bots episode "You've Been Squilshed" premieres in Brazil.
- 2013 — Spotlight: Trailcutter (Dynamic Forces Exclusive Cover) is released by IDW Publishing.
- 2014 — Prime — Season 2 Volume 5: Advance on Cybertron is released to home media by Madman Entertainment in Australia and New Zealand.
- 2018 — The Power of the Primes episode "Volcanicus" premieres on go90 and Tumblr.
- 2021 — The Rescue Bots Academy episodes "Dino-mite Duo" and "The Lonely Titan" premieres in the United States.
- 2023 — Final day of the Rise of the Beasts Optimus Prime, Optimus Primal and Mirage World Tour in Las Vegas, Nevada.
- 2024 — Transformers #8 and Transformers Volume 1: Robots in Disguise TPB are released by Image Comics and Skybound Entertainment.
- 2024 — TakaraTomy officially reveals the Missing Link C-03 Bumblebee & C-04 Cliffjumper and T-SPARK AMT-01 Adamas Machina Rodimus & Predaking.
- 2025 — Amazon reveals their exclusive Transformers Crash & Combine Heroes Optimus Prime & Bumblebee.
- 2025 — Auldey reveals the Transformers Alpha Action Elite Wave 2 on their weibo account.
- 1930 — Darcy Pedrosa (second Brazilian voice of Optimus Prime in the original cartoon) is born.
- 1944 — Frédéric Cerdal (French voice of Bulkhead, Jazz and Blitzwing in Transformers Animated) is born.
- 1963 — Michael Lindsay (voice of Rollbar and Skid-Z) is born.
- 1964 — Loredana Nicosia (Italian voice of Predacon Computer and voice director of Beast Wars) is born.
- 1968 — Hendrik Martz (German voice of Theorem) is born.
- 1969 — Benjamín Rivera (Mexican voice of Rollbar and Harrison) is born.
- 1969 — Voice actor Fernando Cabrera (Castilian Spanish voice of Sam Witwicky in Transformers The Game, but also Bumblebee in the War for Cybertron Trilogy) is born.
- 1970 — Daniel Bergfalk (Swedish voice of Omega Supreme and Six Shot in Transformers: Energon) is born.
- 1971 — Dave Boat (voice of Dark of the Moon: The Video Game Mixmaster, Fall of Cybertron Vortex and Devastation Blitzwing and Devastator) is born.
- 1975 — Olivier Francart (French voice of numerous characters including Motormaster, Saberhorn and Overload in Robots in Disguise) is born.
- 1976 — Musician Shiho Terada is born.
- 1977 — Kanehira Yamamoto (Japanese voice of Fast Willy and Smelt) is born.
- 1982 — Starscream is caught on camera in Estonian SSR. Sector Seven ARG
- 1985 — Marta Dobecka (Polish voice of Bagheri) is born.
- 1986 — The Fight! Super Robot Lifeform Transformers episode "The Key to Vector Sigma, Part 2" premieres in Japan.
- 1989 — The Victory episode "Explosion!! The Energy Base" premieres in Japan.
- 1991 — Z Infante (voice of EarthSpark Nightshade) is born.
- 1998 — The Beast Wars episode "The Agenda (Part 1)" gets its regular syndication debut in the US.
- 2003 — The Legends of the Microns episode "戦友 (きずな) - trust" premieres in Japan.
- 2007 — Transformers: The Animated Movie TPB, The Transformers: Cover Gallery Volume 2, Target: 2006 #2 and The War Within: The Dark Ages reprint TPB are released by IDW Publishing.
- 2009 — The Transformers Animated episode "This Is Why I Hate Machines" premieres in the US.
- 2012 — Autocracy #9 is published digitally, and The IDW Collection Volume 6 is released by IDW Publishing.
- 2012 — The Rescue Bots episode "Countdown" premieres in Brazil.
- 2015 — The Rescue Bots episode "A New Hero" premieres on Discovery Family.
- 2015 — The Robots in Disguise episode "True Colors" premieres on Cartoon Network in the USA.
- 2016 — "The Truth We Make" is released by Fun Publications.
- 2016 — The Robots in Disguise episodes "Cover Me" and "Misdirection" premieres in Italy.
- 2020 — The Rescue Bots Academy episodes "Wild Ghost Chase" and "Little Plot of Horrors" premiere on Discovery Family.
- 2022 — Hasbro Pulse reveals the Wreck N' Rule Collection Comic Universe Impactor and Spindle
- 2024 — Hasbro officially reveals Wal-Mart and Target exclusive Transformers One products.
- 1929 — George Coe (voice of Que/Wheeljack in Dark of the Moon) is born.
- 1950 — Dale Wilson (voice of Smokescreen/Hoist and Mudflap) is born.
- 1962 — Germán Fabregat (Mexican voice of Starscream, Jorge Figueroa, Bryce and Prime Soundwave) is born.
- 1963 — Voice actress Lenne Hardt is born.
- 1965 — François L'Écuyer (Canadian French voice of Seymour Simmons) is born.
- 1967 — Przemysław Nikiel (Polish voice of Starscream and Aerobolt) is born.
- 1972 — Philippe Llado (French voice of Jawbreaker in Transformers: EarthSpark) is born.
- 1972 — Yeong-seon Eun (Korean voice of NAVI and DNAVI) is born.
- 1977 — Tosawi Piovani (Italian voice of Sari Sumdac) is born.
- 1984 — Mammoth Nishio (Japanese voice of Airazor) is born.
- 1985 — Transformers actress Odette Yustman (Socialite in Transformers) is born.
- 1986 — Age of Extinction actress Erika Fong is born.
- 1988 — The Super-God Masterforce episode "Rage!! Little Devils with No Need for Rules" premieres in Japan.
- 2000 — Kaneto Shiozawa (voice of Road King and Sonic Bomber) dies from a cerebral contusion at the age of 46.
- 2000 — The Car Robots episode "Gigatron's Raid" premieres in Japan.
- 2003 — The Armada episode "Crack" premieres in the US.
- 2005 — Beast Wars — The Complete First Season is released on DVD in Canada by Alliance Atlantis.
- 2006 — The Gathering #4 is released by IDW Publishing.
- 2008 — The Transformers Animated episode "Garbage In, Garbage Out" premieres in the US.
- 2008 — The Transformers Animated episode "Velocity" premieres in Canada.
- 2008 — The Animated episode "Transform and Roll Out Part 2" premieres in Germany.
- 2010 — Fan-voting begins for the fifth 2010 inductee to the Transformers Hall of Fame.
- 2013 — Hasbro puts up the second of two online polls in the "Fan Built Bot" program that would ultimately produce Windblade.
- 2014 — The Rescue Bots episode "Space Bots" premieres on Hub Network.
- 2016 — The Robots in Disguise episode "Brainpower" premieres in Italy.
- 2016 — The Robots in Disguise episode "Bumblebee's Night Off" premieres in Hungary
- 2016 — Transformers: Robots in Disguise — Season One is released on home media by Shout! Studios.
- 2017 — Lost Light #5 is released by IDW Publishing.
- 2022 — Hasbro Pulse reveals the Wreck N' Rule Collection Leadfoot and Masterdominus.
- 2022 — TakaraTomy reveals Masterpiece MP-56 Trailbreaker as well as Studio Series Bumblebee, Sideways and Arcee.
- 2023 — Tickets for Transformers: Rise of the Beasts go on sale.
- 2023 — Transformers: Forged to Fight is relaunched as a Netflix-exclusive game.
- 2024 — The EarthSpark episode "Stowed Away, Stowaways" premieres on YTV in Canada.
- 2025 — The EarthSpark episode "In Ruins" premieres in Cantonese.
- ???? — Dreamwave Productions colorist Cil Cheung is born "in the year of the Rooster".
- 1922 — Magalhães Graça (Brazilian voice of Alpha Trion, Scourge, Scrapper, Quintesson Judge and more) is born.
- 1924 — Mercedes-Benz, who will years later be a major contributor to the live-action film series, is formed.
- 1942 — Terry McGovern (voice of Wildrider and one of the voices of Onslaught) is born.
- 1942 — Victor Caroli (The iconic Narrator of the original cartoon) is born.
- 1954 — Jacques Lavallée (Canadian French voice Joshua Joyce and Merlin) is born.
- 1959 — Veteran Takara designer Kōjin Ōno is born.
- 1966 — Antonella Baldini (Italian voice of Miranda Jones and Elita-1) is born.
- 1974 — Bill Rogers (voice of War For Cybertron Trilogy Wheeljack and more) is born.
- 1982 — Tim Kreuer (German voice of Nightshade) is born.
- 1992 — Storyboard artist Jordan Rosato is born.
- 1994 — Alex Villamar (Mexican voice of 24K-Bit and Guzzlerush) is born.
- 2004 — The Transformers PlayStation 2 game by Melbourne House is released in the US.
- 2008 — Actress Minti Gorne (Child Viviane Wembly in The Last Knight) is born.
- 2010 — Fun Publications puts up images of BotCon 2010's exclusive Clench toy.
- 2011 — Transformers: Dark of the Moon Movie Adaptation TPB is released by IDW Publishing.
- 2011 — Transformers: Prime is nominated for four Daytime Emmy awards, plus background designer Vince Toyama and color designer Christophe Vacher win juried Individual Achievement in Animation Emmys.
- 2016 — The Robots in Disguise episode "Impounded" premieres in Hungary.
- 2016 — The Robots in Disguise episode "Misdirection" premieres in Italy.
- 2019 — The Cyberverse episodes "Whiteout" and "Megatron Is My Hero" premiere in Japan.
- 2021 — The Bumblebee (Motion Picture Score) album is released on CD by La-La Land Records.
- 2022 — Hasbro Pulse reveals the Wreck N' Rule Collection Autobot Springer.
- 2022 — Last Bot Standing #1 is released by IDW Publishing.
- 2022 — LEGO officially announces and reveals an official LEGO Transformers collaboration 10302 Optimus Prime.
- 1938 — Mauro Bosco (Italian voice of Jetfire) is born.
- 1948 — Actor Richard Riehle (Theater Landlord in Transformers: Age of Extinction) is born.
- 1948 — João Baptista de Pereira Filho (Brazilian voice of Cicadacon) is born.
- 1952 — Christopher Gaze (voice of the Diagnostic Drone) is born.
- 1956 — Claudio Fattoretto (Italian voice of Tankor in Beast Machines and Sideswipe in the live-action film series) is born.
- 1958 — Tony Oliver (additional voices in the 2001 Robots in Disguise cartoon) is born.
- 1967 — Jorge Lucas (Brazilian voice of Brains, Joshua Joyce and Merlin) is born.
- 1967 — Kenichirō Tanabe (voice of Tonbot) is born.
- 1970 — Mauro Horta (Brazillian voice of Barricade and Optimus Prime) is born.
- 1989 — The Transformers episode "The Rebirth, Part 3" premiers in Germany.
- 1992 — Fernanda Robles Patino (Mexican voice of Cruelty and Dot Malto) is born.
- 1992 — Gergei Mayén (Mexican voice of Mahfouz) is born.
- 1992 — Szymon Roszak (Polish voice of Mirage and Hardtop) is born.
- 1994 — Mason Hensley (voice of Wedge in Rescue Bots Academy) is born.
- 1995 — Paula Troyack (Brazilian voice of Hank) is born.
- 1999 — The Beast Wars Neo episode "Mach Kick Voluntarily Enlists!?" premieres in Japan.
- 2003 — Paulo Flores (Brazillian voice of Wildrider, Rumble, Devastator, Quintesson Judge and more) dies at age 58.
- 2010 — The Transformers Animated ED single "Axel Transformers" is released in Japan by Lantis.
- 2010 — The Transformers: Ironhide #1 is released by IDW Publishing.
- 2012 — José Luis Alfonso Padilla Adorno (Mexican voice of Wedge and Ron Witwicky) dies at age 52.
- 2012 — The Transformers: Prime episode "Out of His Head" premieres in Spain.
- 2012 — The Transformers: Prime episode "Triangulation" and Transformers: Rescue Bots episode "Return of the Dino Bot" premiere on The Hub.
- 2015 — The Robots in Disguise episode "True Colors" premieres in Brazil.
- 2015 — The Transformers: Rescue Bots: "Return of the Heroes" compilation DVD is released in the US by Shout! Studios.
- 2016 — Last day to play Transformers: Battle Tactics.
- 2016 — The Robots in Disguise episode "Bumblebee's Night Off" premieres in Italy.
- 2016 — The Robots in Disguise episode "Portals" premieres in Hungary.
- 2020 — Transformers: The Manga Volume 2 is released by Viz Media.
- 2022 — Hasbro Pulse reveals the Wreck N' Rule Collection Prime Universe Bulkhead.
- 2024 — The Transformers: EarthSpark episode "Hope for the Future" premieres in Japan.
- 2025 — Mochibots annouces their Decepticon Mirage plush.
- 1927 — Gernot Duda (German voice of Generation 1 Megatron and Grimlock as well as other brief roles) is born.
- 1936 — Miguel Ángel Sanromán (Latin-American Spanish voice of Blix and voice director of Beast Wars) is born.
- 1944 — Hiroyuki Hoshiyama (writer for the Super-God Masterforce and Victory cartoons) is born.
- 1946 — Writer Marv Wolfman is born.
- 1950 — Eom Joo-hwan (Korean voice of Hot Rod/Rodimus Prime and Unicron) is born.
- 1951 — Dieter Memel (German voice of Grimlock, Swindle, Hammerstrike and Stockade) is born.
- 1956 — Kirk Thornton (voice of Dr. Onishi and Shadelock) is born.
- 1961 — Pierluigi Astore (Italian voice of Bruticus, Ironhide, Megatron, Optimus Prime and Ultra Magnus) is born.
- 1969 — Margeaux Pepoy (inker for Devil's Due Press) is born in Michigan.
- 1978 — Junji Majima (voice of Sensuimaru) is born.
- 1985 — Alex Minei (Brazilian voice of Raf Esquivel, Angry Cheese, Wishy-Waffley, and Merchant app) is born.
- 1986 — Óscar Garibay (Mexican voice of Teletraan-1 and Breakdown) is born.
- 1989 — Denisse Aragón (Mexican voice of V.A.L.) is born.
- 1989 — Xavier Sol (Mexican voice of the Announcer Bot in Transformers One) is born.
- 1998 — The Beast Wars II episode "The Insect Corps Arrive" premieres in Japan.
- 2004 — Takara releases Super Link SD-12 Dinobot and SD-13 Shadowhawk Limited Cosmo Type.
- 2011 — The Silver Bumblebee toy is given away as part of a "Midnight Madness" event (leading into May 14) at Toys"R"Us stores in mainland China, Hong Kong, Singapore, Taiwan, Malaysia, and Thailand.
- 2015 — More than Meets the Eye Volume 7 TPB is released by IDW Publishing.
- 2016 — "Life Finds a Way" is released by Fun Publications.
- 2016 — The Robots in Disguise episode "Graduation Exercises" premieres in Hungary.
- 2017 — The Robots in Disguise episode "Blurred" premieres on Cartoon Network.
- 2020 — Transformers: The Definitive G1 Collection Volume 95: G.I. Joe vs. Transformers, Part 1 is released by Hachette Publishing.
- 2021 — Transformers Generations issue "Scorching Heat Showdown" is first published by Hero-X.
- 2022 — Hasbro Pulse posts an update on by uploading a 40 minute in depth video with Evan Brooks on the HasLab Victory Saber.
- 2022 — Hasbro Pulse reveals the Wreck N' Rule Collection Diaclone Universe Twin Twist.
- 2023 — The EarthSpark episode "Friends and Family" premieres in Cantonese.
- 2024 — Transformers Go! Go! Extra Volume is released.
- 2026 — Transformers #32 is released by Image Comics and Skybound Entertainment.
- ???? — Esteban Desco (Mexican voice of Soundwave, Berserker, Refraktor and Teletraan-1/Arkbot) is born.
- 1944 — George Lucas (creator of Star Wars) is born.
- 1945 — Olney Cazarré (Brazilian voice of Skyfire and more) is born.
- 1951 — François Siener (French voice of Megatron and Terrorsaur in Beast Wars) is born.
- 1954 — Juan Luis Rovira (Spanish voice of Optimus Primal) is born.
- 1959 — Jan Kurbjuweit (German voice of Tailgate, Vehicon and Jacknab)
- 1969 — Gutemberg Barros (Brazilian voice of W.A.R.S.) is born.
- 1973 — Francesco Pezzulli (Italian voice of Daniel Witwicky, Side Burn and Jorge Figueroa) is born.
- 1979 — Comic artist Fico Ossio is born.
- 1981 — Mikhail Tihonov (Russian voice of Side Burn, Slapper, Patrick Donnelly, Bumblebee and numerous others) is born.
- 1981 — Sérgio Cantú (Brazilian voice of R.E.V. and Sam Witwicky) is born.
- 1994 — The Generation 2 episode "More than Meets the Eye, Part 3" premieres in Germany.
- 1999 — Beast Wars: Super Lifeform Transformers Special — Clash! Beast Warriors and Beast Wars: Super Lifeform Transformers Special — Beast Wars: Metals are released on VHS by Toei Video.
- 2003 — Robert Stack (the voice of Ultra Magnus in The Transformers: The Movie) dies of a heart attack at the age of 84.
- 2003 — Transformers Armada #11 is released by Dreamwave Productions.
- 2005 — The Galaxy Force episode "The Glorious Planet Cup" premieres in Japan.
- 2005 — The Galaxy Force chapter "Fastest Dream! Hot Shot's Run" is released in Comic BunBun.
- 2008 — Best of UK: Space Pirates #3 and Devastation TPB are published by IDW Publishing.
- 2008 — Hasbro announces their acquisition of the worldwide distribution rights of the television series featuring their characters, including The Transformers, from TV-Loonland. [1]
- 2008 — The Victory series is released on DVD in Australia by Madman Entertainment.
- 2011 — The TakaraTomy Dark of the Moon website begins the first of three Lucky Draw figure "Mechtech Campaign" contests, the "A" prize being one of 10 "Tritanium Bumblebee" toys. Four exclusive MechTech weapons are also made available at different store chains.
- 2011 — The Transformers: Prime episode "Shadowzone" premieres on The Hub.
- 2014 — LB Kids releases the Kre-O Transformers Character Encyclopedia with exclusive Orion Pax Kreon.
- 2014 — More than Meets the Eye #29 and Regeneration One Volume 4 TPB are released by IDW Publishing.
- 2016 — The Rescue Bots episode "Back to Virtual Reality" premieres on Discovery Family.
- 2016 — The Robots in Disguise episode "Decepticon Island (Part 2)" premieres on Cartoon Network in the US.
- 2023 — The Beast Wars Again episode "The Solitary Warrior Tigatron (Part 1)" airs on TV Tokyo.
- 2024 — Artist Don Perlin passes away at age 94.
- 2024 — Hasbro Pulse hosts a Transformers Tuesday fanstream officially revealing the 3rd Studio Series wave of the year and the Comic Edition Decepticon Straxus, and pre-orders go up for them.
- 2024 — Mattel Creations officially reveals the Hot Wheels Transformers Optimus Prime.
- 2025 — Energon Universe 2025 Special, Transformers #20, and Transformers Volume 3: Combiner Chaos TPB are released by Image Comics and Skybound Entertainment.
- 2025 — TakaraTomy reveals numerous Transformers products at the Shizuoka Hobby Show 2025 event.
- 2025 — The Wild King episode "Courage to Protect What's Important" premieres on the TakaraTomy YouTube channel.
- 1926 — Regis Cordic (voice of Generation 1 Menasor and various Quintessons) is born.
- 1952 — Uli Pleßmann (voice of Dinobot in the German dub of Beast Wars) is born.
- 1967 — Frank Carreño (Latin-American Spanish voice of Cyclonus) is born.
- 1969 — Roberto Gammino (Italian voice of Dutch and voice director of Beast Machines) is born.
- 1970 — Carlos Vitale (Latin-American Spanish voice of Energon Shockblast and Cybertron Landmine) is born.
- 1972 — Jong-deok An (voice of Guiledart and Mach Kick in the Korean dub of Beast Wars Neo) is born.
- 1987 — The Fight! Super Robot Lifeform Transformers 2010 episode "Black Money" airs in Japan.
- 1997 — Emanuela Ionica (Italian voice of Charlie Watson) is born.
- 2003 — Final day to pre-order the e-HOBBY exclusive RoadHauler and Sunstorm set.
- 2003 — Legends of the Microns Silverbolt is released in Japan, both in a single pack and in a larger set with the Street Speed Microns.
- 2006 — The seventh show in the Kiss Players radio drama series airs in Japan on the "Lyrian Moe-tchao" program.
- 2006 — The Super-God Masterforce cartoon is released on DVD in the UK by Metrodome.
- 2009 — The first six chapters of the Henkei! Henkei! Transformers manga serialized in Comic BunBun is released in a collected format by Poplar.
- 2009 — The Henkei! Henkei! Transformers manga chapter "Creation! The New Emperor of Destruction!!" is serialized in Japan in Comic BunBun's June 2009 issue.
- 2010 — The Transformers Animated episode "Challenge of the Burning Giant" debuts in Japan.
- 2013 — Regeneration One #91, Rage of the Dinobots TPB and a second printing of Fall of Cybertron are released by IDW Publishing.
- 2014 — The second big "payoff" trailer for Age of Extinction is released on YouTube.
- 2015 — John Stephenson (voice of Generation 1 Thundercracker, Kup, Alpha Trion, Windcharger and others) passes away at the age of 91.
- 2017 — First day of the Valvoline's The Last Knight "Valvotron" promotion: purchasing a "full synthetic oil change" would net you the figure. An Autobot-branded lunchbox could also be one with no purchase necessary.
- 2018 — The Power of the Primes episode "Without Warning" premieres on go90 and Tumblr.
- 2018 — José Lavat (Mexican voice of Unicron in Predacons Rising) dies.
- 2018 — Writer Dean Stefan dies.
- 2019 — Transformers #5 is released by IDW Publishing. Transformers: The Definitive G1 Collection Volume 58: Shockpoint is released by Hachette Paperworks.
- 2020 — Actor Fred Willard (voice of Swindle on Transformers Animated) passes away at the age of 86 due to cardiac arrest.
- 2020 — First day of preorders on TakaraTomy Mall for Generations Selects God Neptune.
- 2020 — The Generations Selects Special Comic God Neptune comic 1 is first published.
- 2021 — The Rescue Bots Academy episodes "X Marks the Bot" and Making Tracks" premieres in the United States.
- 2024 — First day of the Til All Are One: Transformers 40th Anniversary Reunion Screening in theatres.
- 2024 — Hasbro Pulse puts preorders up for the Missing Link C-03 Bumblebee & C-04 Cliffjumper.
- 2024 — Rooster Teeth and its website are officially shut down.
- 2024 — Transformers Go! Go! #38 is published.
- 19?? — Maki Yaosaka (voice of Teacher) is born.
- 1927 — Gino Donato (Italian voice of Megatron) is born.
- 1938 — Michel Bedetti (European French voice of various characters in the original cartoon) is born.
- 1946 — Philippe Dumond (European French voice of Starscream in the live-action film series and Ratchet in the War for Cybertron game) is born.
- 1947 — Jan Spitzer (German voice actor of two Megatrons and two Ratchets) is born.
- 1951 — Unshō Ishizuka (Japanese voice of Silas) is born.
- 1968 — Diego Sabre (Italian voice of various characters including Chromedome in The Headmasters, Waspinator in Beast Wars and Knock Out in Prime) is born.
- 1972 — Khary Payton (voice of 2015 Robots in Disguise cartoon Grimlock, Divebomb, and Bisk) is born.
- 1973 — Kōsuke Toriumi (Japanese voice of Super Link Hot Shot, Jinbu and Q-Transformers Red Alert) is born.
- 1980 — Toshitsugu Takashina (voice of Beast Megatron and Gigant Bomb in Robotmasters) is born.
- 1983 — Fabian Oscar Wien (German voice of Airazor and Jetfire) is born.
- 1986 — Actress Megan Fox (Mikaela Banes in Transformers) is born.
- 1986 — The Fight! Super Robot Lifeform Transformers episode "The Spring of Transformation" premieres in Japan.
- 1989 — The Victory episode "Big City - Underground Terror" premieres in Japan.
- 1996 — The Beast Wars series premieres in the U.S. with the episode "Beast Wars (Part 1)."
- 1998 — The Beast Wars episode "The Agenda (Part 2)" gets its regular syndication debut in the US.
- 1998 — The Beast Wars episode "Fallen Comrades" premieres in Germany.
- 2001 — The final episode of the Beast Wars II cartoon, "Farewell! Lio Convoy", premieres in South Korea on SBS.
- 2003 — The Legends of the Microns episode "休日 (ほねやすめ) - vacation" premieres in Japan.
- 2007 — You Can Draw Transformers and the updated paperback edition of Transformers: The Ultimate Guide are released by DK Publishing.
- 2009 — The Transformers: Animated episode "Endgame, Part I" premieres in the US.
- 2011 — Streetdate for the first wave of Dark of the Moon toys.
- 2014 — The "Convoy [Anniversary Clear Ver.]" toy is made available at the "Transformers Celebration 2014" midnight event at the Sunshine City Toys"R"Us store in Ikebukuro, Japan.
- 2015 — The Robots in Disguise episode "Rumble in the Jungle" premieres on Cartoon Network in the USA.
- 2015 — The Rescue Bots episode "Four-Legged Hero" premieres on Discovery Family.
- 2016 — The Robots in Disguise episode "Impounded" premieres in Italy.
- 2018 — Transformers: The Definitive G1 Collection: Volume 45: Last Stand of the Wreckers is released by Hachette Partworks.
- 2020 — The Rescue Bots Academy episodes "Mystery Museum" and "Partners" premiere on Discovery Family.
- 2023 — Junior novels The Search Is On and Mission at the Museum are released by Simon Spotlight.
- 2023 — Hasbro hosts a fan first stream revealing new Studio Series figures as well as the Amazon exclusive Pre-Cybertronian War Subline with Transformers fan Sixo.
- 2023 — First day of the Rise of the Beasts Optimus Prime, Optimus Primal and Mirage World Tour in Chicago, Illinois.
- 2024 — In a first for the Transformers franchise, the Skybound Entertainment Transformers comic run receives several nominations for the Will Eisner Comic Industry Award.
- 2024 — Carmen Sheila (Brazilian voice of the original The Transformers cartoon Arcee) dies at age 83.
- 1941 — Lyricist Kōnosuke Fuji is born.
- 1970 — Alessandro Quarta (Italian voice of Laserbeak) is born.
- 1970 — Daniela Calò (Italian voice of Nightbird) is born.
- 1988 — The Super-God Masterforce episode "Go, Goshooter - Showdown in the Wasteland" premieres in Japan.
- 2000 — The Car Robots episode "Speedbreaker's In Danger" premieres in Japan.
- 2006 — Generations #3 is released by IDW Publishing.
- 2007 — The theatrical trailer for Transformers is released online.
- 2008 — The Transformers Animated episode "Rise of the Constructicons" premieres in Canada.
- 2008 — The Transformers Animated episode "Velocity" premieres in the US.
- 2008 — The Animated episode "Transform and Roll Out Part 3" premieres in Germany.
- 2008 — Kids' WB has its final broadcast, the following weekend it would be rebranded into The CW4Kids.
- 2013 — The Transformers: Prime episode "Project Predacon" premieres on the Hub Network.
- 2013 — Final day of voting in the second of two online polls in Hasbro's "Fan Built Bot" program, which would ultimately produce Windblade.
- 2014 — The Rescue Bots episode "The Island of Misfit Tech" premieres on Hub Network.
- 2015 — The Robots in Disguise episode "Rumble in the Jungle" premieres in Japan.
- 2016 — The first teaser trailer for Transformers: The Last Knight is released.
- 2016 — The Robots in Disguise episode "Portals" premieres in Italy.
- 2017 — Revolutionaries #4 is released by IDW Publishing.
- 2017 — Transformers: The Definitive G1 Collection: Volume 31: The Iron Fist is released by Hachette Partworks.
- 2020 — The Transformers: Cyberverse episode "Wild Wild Wheel" premieres in the United States
- 2021 — TakaraTomy A.R.T.S. announces the discontinuation of the Toy Clash! Roboca Battle arcade game.
- 2023 — First day to pre-order the Threezero MDLX Starscream.
- 2024 — The EarthSpark episode "The Battle of Witwicky" premieres on YTV in Canada.
- 2024 — Hasbro releases the Beast Machines Original Soundtrack to streaming platforms Spotify, Apple Music, Amazon Music and YouTube.
- 2024 — Hideyuki Umezu (Japanese voice of Joshua Joyce and Merlin) dies at age 68.
- 2025 — The EarthSpark episode "Control Alt Delete" premieres in Cantonese.
- 1897 — Dracula, by author Bram Stoker, is published.
- 1934 — Nikola Simić (Serbian voice of Megatron) is born.
- 1945 — Márcio Seixas (Portuguese voice of Armada Thrust and the Quintessons) is born.
- 1952 — Writer Diane Duane is born.
- 1952 — Ryūzaburō Ōtomo (Japanese voice of Galvatron in Age of Extinction and also Galvatron in War For Cybertron Trilogy) is born.
- 1953 — Artist Alan Kupperberg is born.
- 1954 — Ekkehardt Belle (German voice of Sideways and Unicron) is born.
- 1964 — Ken Narita (Japanese voice of Hound, Sureshot, Triggerhappy and numerous others) is born.
- 1967 — Actor Bob Stephenson (Xbox Guy in Transformers) is born.
- 1970 — Mykhailo Kryshtal (Ukranian voice of Sentinel Prime) is born.
- 1973 — Nessym Guetat (French voice of Bumblebee in the War for Cybertron videogame and the JPL Engineer) is born.
- 1981 — Age of Extinction actor Zou Shiming is born.
- 1981 — Andrzej Hausner (Polish voice of Paralon) is born.
- 1995 — Stephanie Filigrana (Mexican voice of Bala) is born.
- 1997 — Color designer for The Transformers, Phyllis Craig, passes away due to complications involving a brain tumor.
- 2005 — Super Link—Volume 013 is released on DVD in Japan by Interchannel.
- 2007 — The Transformers Collectors' Club members-only site releases online bios for the Mini-Cons Kickback, Repeater, Rock Krusher, Saw Boss and Starcatcher.
- 2009 — The Linkin Park single "New Divide" is released by Reprise Records.
- 2011 — IDW Publishing is busy, releasing Transformers: Foundation #4, The Transformers #19 and the TPBs of Foundation and Transformers: Rising Storm and the Transformers Movie Slipcase Collection Vol 1 and 2.
- 2016 — The Robots in Disguise episode "Graduation Exercises" premieres in Italy.
- 2019 — Justin Ponsor dies from a two year battle to cancer.
- 2022 — Transformers #43 is released by IDW Publishing.
- 2022 — Mobile Legends: Bang Bang posts a new cinematic trailer announcing a second Transformers collaboration.
- 2024 — Second day of the Til All Are One: Transformers 40th Anniversary Reunion Screening in theatres.
- ???? — Transformers fan and media personality Sixo is born. More on that later.
- 1930 — Alexander Allerson (German voice of Sentinel Prime, Primon, Prima, Prime Nova, Guardian Prime and Zeta Prime) is born.
- 1954 — Hōchū Ōtsuka (Japanese voice of Ultra Magnus, Ranger, Guyhawk, War for Cybertron Trilogy Megatron and more) is born.
- 1956 — Steven Ford ("Four Star General" in Transformers) is born to Gerald and Betty Ford. No, really!
- 1959 — Jim Ward (voice of Perceptor from Fall of Cybertron) is born as the tallest newscaster at 11:00 P.M.
- 1962 — Yoshikazu Iwanami (Japanese localization and dialogue director for Beast Wars and numerous other shows and sound director of Legends of the Microns) is born.
- 1965 — Actress Maile Flanagan (Accuretta worker in Transformers: Dark of the Moon) is born, BELIEVE IT!
- 1967 — Comic artist Steve Leiber is born in Pennsylvania.
- 1971 — Matthias Deutelmoser (German voice of Thunderhoof) is born.
- 1973 — Park Young-jae (Korean voice of Jazz and Jorge Figueroa) is born.
- 1977 — Kelly Sheridan (voice of Amphitrite) is born.
- 1984 — Takuya Satō (Japanese voice of Hot Rod) is born.
- 1986 — Óscar Garibay (Mexican voice of Teletraan-1 and Breakdown) is born.
- 1987 — Adriana Albuquerque (Brazilian voice of V.A.L.) is born.
- 1989 — The Transformers episode "Transport to Oblivion" premieres in Germany.
- 1991 — The Victory episode "Leozack Attacks" premieres in Malaysia.
- 1993 — Miguel de León (Mexican voice of Rack'n'Ruin, Shockwave and Hoagie) is born.
- 1999 — The Beast Wars Neo episode "Planet of the Ultimate Weapon" premieres in Japan.
- 2004 — Super Link—Volume 001 is released on DVD in Japan by Interchannel.
- 2004 — Transformers Energon #23 is released by Dreamwave Productions.
- 2005 — The Hasbro Property Group announces the awarding of the Transformers comic license to IDW Publishing, with an “issue 0” hitting in October 2005 before the full launch in January 2006.
- 2009 — The Revenge of the Fallen novelization is released in the US.
- 2010 — Last Stand of the Wreckers #5 is released by IDW Publishing.
- 2012 — The Transformers: Prime episode "Triage" and Transformers: Rescue Bots episodes "The Other Doctor" and "The Reign of Morocco" premiere on The Hub.
- 2012 — The Transformers: Prime episode "Shadowzone" premieres in Spain.
- 2012 — The Super Robot Lifeform Transformers: Prime episode "Freezing Transformation!? Terror of the Minicons" premieres in Japan.
- 2015 — The Robots in Disguise episode "Rumble in the Jungle" premieres in Brazil.
- 2016 — The Robots in Disguise episode "Decepticon Island (Part 1)" premieres in Italy.
- 2021 — Transformers #29, #30 and Escape #3 are released by IDW Publishing.
- 2023 — Tobe Nwigwe's single "On My Soul" is released.
- 2024 — The Transformers: EarthSpark episode "Traveling is the best!" premieres in Japan.
- 2024 — Third and final day of the Til All Are One: Transformers 40th Anniversary Reunion Screening in theatres.
- 19?? — Daisuke Ishikawa (voice of Motorarm) is born in Tokyo.
- 1948 — Tesshō Genda (Japanese voice of original cartoon Optimus Prime, movie Optimus Prime and EarthSpark Optimus Prime) is born. Henshin!
- 1952 — Jeong-gu Lee (Korean voice of film Optimus Prime, Cybertron Optimus Prime, Rescue Bots Optimus Prime, Fire Convoy, Lio Convoy, and Big Convoy) is born.
- 1956 — Marc Alfos (French voice of Megatron in the first two movie videogames and War for Cybertron Warpath) is born.
- 1957 — Ernesto Lezama (Mexican voice of Dark of the Moon Laserbeak) is born.
- 1965 — Shunsuke Sakuya (Japanese voice of Roadbuster and Grimlock) is born.
- 1967 — Claudio Moneta (Italian voice of Rattrap, Animated Wreck-Gar and Prime Ratchet) is born.
- 1973 — Comic artist Mike Norton is born in Santa Monica, California.
- 1975 — Marc Thompson (voice of Cyberverse Megatron, Sky-Byte, Sludge, Soundblaster, Bug Bite, Tarn and more) is born. Goongala!
- 1983 — Josh Perez is born, coloring his way into the world.
- 1988 — Chen Qian (Chinese voice of Arcee, Alice and Julia Singer) is born.
- 1998 — The Beast Wars II episode "Friend or Foe? The Insect Robos" premieres in Japan.
- 2009 — All Hail Megatron #11, Revenge of the Fallen #1 and the TPBs for Alliance, Defiance and Revenge of the Fallen are released by IDW Publishing.
- 2014 — Javier Amilibia (European Spanish voice of Jazz and a Prime in the live-action film series) passes away, aged 48.
- 2015 — The Transformers vol. 2 #41 — Combiner Wars part 4 is released by IDW Publishing.
- 2016 — "The Toxic Transformer" is released by Fun Publications.
- 2017 — The Robots in Disguise episode "Sphere of Influence" premieres on Cartoon Network.
- 1956 — Yolanda Vidal (Latin American Spanish voice of Charlotte Mearing) is born.
- 1957 — Staffan Hallerstam (Swedish voice of Jazz, Megatron and Spike Witwicky) is born.
- 1961 — Jean-Michel Vovk is born (French voice of Agent Fowler in the Prime cartoon and Drift in the Robots in Disguise cartoon).
- 1963 — Paweł Szczesny (Polish voice of Sideways and Megatron) is born.
- 1963 — Pierre Bodson (French voice of Grimlock in Robots in Disguise (2015) and another Grimlock in Cyberverse) is also born.
- 1972 — Rapper The Notorious B.I.G. is born.
- 1974 — Rasmus Borowski (German voice of Scattorshot and Seeker) is born.
- 1988 — Deco artist Alex Androski is born.
- 1992 — Christian Zeiger (German voice of Raf Esquivel) is born.
- 1994 — The Generation Two episode "S.O.S. Dinobots" premieres in Germany.
- 1998 — Wave four of the Beast Wars II toyline is released in Japan, consisting of Galvatron and the "History's Greatest Showdown: Lio Convoy VS Galvatron" 2-pack.
- 1998 — The Beast Wars II OP single "GET MY FUTURE" and ED single "Yume no Iru Basho" are released in Japan by Columbia Music Entertainment.
- 2003 — War and Peace #2 is released in the US by Dreamwave Productions.
- 2004 — The Transformers—Collection 2: Series 2.1 is released on DVD in New Zealand by Madman Entertainment.
- 2004 — The Transformers: Prey TPB is published by Titan Books.
- 2005 — The Galaxy Force episode "Deadly Battle at the Edge of the Aurora" premieres in Japan.
- 2006 — Álvaro Salarich (Mexican voice of Otis Watson) is born.
- 2009 — Transformers #25 is released in the UK by Titan Books.
- 2009 — Transformers Generations 2009 Vol. 2 is published in Japan by Million Publishing.
- 2014 — Windblade #2 and new printings of the first volumes of More than Meets the Eye and Robots in Disguise are released by IDW Publishing.
- 2014 — Transformers Animated Season Three is released in Australia by Madman Entertainment.
- 2016 — The Rescue Bots episode "Vanishing Returns" premieres on Discovery Family.
- 2021 — Hasbro hosts a Fan First Friday online event.
- 2023 — The Beast Wars Again episode "The Solitary Warrior Tigatron (Part 2)" airs on TV Tokyo.
- 2024 — Super7 officially reveals the ReAction Unicron (Prototype) figure and preorders go up for it.
- 2025 — Void Rivals Deluxe Edition Book 1 HC is released by Image Comics and Skybound Entertainment.
- 1930 — Author John Grant is born.
- 1945 — Marvel Comics artist Carlos Garzón is born in Colombia.
- 1951 — Sérgio Fortuna (Brazilian voice of Cyber Missions Optimus Prime, Cogman and Shockwave) is born.
- 1957 — Writer Ken Pontac is born.
- 1966 — Cássius Romero (Portuguese voice of Cheetor, Maven Danger and Grimlock) is born.
- 1969 — Actor Michael Kelly (Agent Burke in Rise of the Beasts) is born.
- 1973 — Lee Kye-yoon (Korean voice of Windblade) is born.
- 1979 — Luiz Sérgio Vieira (Brazilian voice of Sqweeks) is born.
- 1984 — The first-ever recorded mention of Transformers on the Internet is a less-than-glowing review of The Transformers #1.
- 1987 — The Fight! Super Robot Lifeform Transformers episode "Nightmare Planet" airs in Japan.
- 1991 — Darko Bozovic (European French voice of Dropkick in the Bumblebee movie) is born.
- 1998 — Beast Wars: Super Lifeform Transformers — The Immortal Starscream & Fare Thee Well, Tigatron are released on VHS in Japan by Pioneer LDC.
- 2006 — Shooter and Hottie, the dogs that played Dylan Gould's watchdogs, are born.
- 2006 — The eighth show in the Kiss Players radio drama series airs in Japan on the "Lyrian Moe-tchao" program.
- 2008 — Brian Goldner effectively became the chief executive officer of Hasbro replacing Alfred J. Verrecchia.
- 2008 — Preorders for Henkei! Henkei! Skywarp and Thundercracker start.
- 2009 — Transformers is released on Blu-Ray in Japan.
- 2010 — The Animated episode "Birth of the Dinobots!" debuts in Japan.
- 2010 — The third wave of TakaraTomy's Animated toyline is released in Japan: Grimlock, Snarl, Swoop and Blackout.
- 2013 — Robots in Disguise #17 is released by IDW Publishing.
- 2015 — Q-Transformers is released on Blu-Ray and DVD.
- 2018 — The Power of the Primes episode "Primal" premieres on go90 and Tumblr.
- 2018 — The Rescue Bots: Team Rescue Bots! compilation DVD is released in the US by Shout! Studios.
- 2021 — The Rescue Bots Academy episodes "Don't be Alarmed" and "Powerless" premieres in the United States.
- 2023 — Monro begins its Optimize Your Ride promotional tie in campaign with Rise of the Beasts.
- 2024 — Cobra Commander #5 and Void Rivals #9 are released by Image Comics and Skybound Entertainment.
- 2025 — Éric Legrand (European French voice of Devcon in the original cartoon and Que/Wheeljack in Dark of the Moon) passes away at age 66.
- 1910 — Scatman Crothers (voice of original The Transformers cartoon Jazz) is born. Fan-riffic!
- 1942 — Dieter Brian Gerlach (German voice of Prime Ultra Magnus, Hardshell and Cyberverse Croaton) is born.
- 1959 — Toshiyuki Takahashi (voice of Takahashi Meijin) is born.
- 1965 — Kappei Yamaguchi (Japanese voice of Rattrap, Rattletrap, Jetfire and Nightshade) is born.
- 1968 — Actor John Ortiz (Dr. Powell in Bumblebee) is born.
- 1972 — Atsushi Imaruoka (Japanese voice of Animated Ironhide, Cliffjumper, Prime Breakdown and others) is born.
- 1975 — Emiliano Reggente (Italian voice of Inferno, Ratchet and Alex Malto) is born.
- 1975 — LaMonica Garrett (Morshower's Aide in Dark of the Moon) is born.
- 1977 — Richard Ayoade (voice of Fairmaestro) is born.
- 1978 — Jesse Heiman (Dark of the Moon cameo actor) is born.
- 1979 — Director Josh Cooley is born.
- 1979 — Artist Francesco Mattina is born.
- 1981 — Alex Montiel (Mexican voice of Dropkick) is born.
- 1986 — The Fight! Super Robot Lifeform Transformers episode "Hoist Goes Hollywood" premieres in Japan.
- 1989 — The Victory episode "Clash!! Two Great Heroes" premieres in Japan.
- 1998 — The Beast Wars episode "The Agenda (Part III)" gets its regular syndication debut in the US.
- 1998 — The Beast Wars episode "Double Jeopardy" premieres in Germany.
- 2003 — The Legends of the Microns episode "援軍 (あらて) - reinforcement" premieres in Japan.
- 2005 — The Transformers: Aspects of Evil TPB is published by Titan Books.
- 2007 — Escalation TPB is released by IDW Publishing.
- 2009 — The series finale of Transformers: Animated, "Endgame, Part II" premieres in the US.
- 2012 — More than Meets the Eye #5 is released, and Autocracy #10 is published digitally by IDW Publishing.
- 2014 — TakaraTomy publishes Mode "Eva" chapter 1
- 2014 — Transformers Prime — "Folge 12: Die Entscheidung " is released to home media by EDEL:kids in Germany.
- 2015 — The Robots in Disguise episode "Can You Dig It?" premieres on Cartoon Network in the USA.
- 2015 — The Rescue Bots episode "Endangered Species" premieres on Discovery Family.
- 2015 — Transformers: Age of Extinction makes its premiere on the Brazilian tv channel Telecine.
- 2016 — "Transformers: Robots in Disguise — Rumble in the Jungle" is released on home media by Primal Screen.
- 2016 — The Robots in Disguise episodes "Decepticon Island (Part 2)" premieres in Italy.
- 2020 — The Rescue Bots Academy episodes "Critical Condition" and "Fun Droids" premiere on Discovery Family.
- 2023 — Preorders for the Studio Series Bumblebee, SS86-22 Brawn, SS+05 Gamer Edition Cliffjumper, SS103 Rhinox, SS+04 Gamer Edition Megatron and the Buzzworthy Bumblebee 102BB ROTB Optimus Prime.
- 2023 — Final day of the Rise of the Beasts Optimus Prime, Optimus Primal and Mirage World Tour in Chicago, Illinois.
- 2025 — Transformers One is released on Paramount+ in Japan and the United Kingdom.
- 2025 — Paramount+ is launched in The Philippines.
- 1963 — Kōtarō Nakamura (Japanese voice of Megatron) is born.
- 1965 — Jirō Saitō (voice of Reverse Convoy/Rebirth Megatron, Dark of the Moon Soundwave and Shockwave) is born.
- 1965 — Janne Porkka (Finnish voice of Jolt, Mudflap and Scattorshot) is born.
- 1979 — Tobias Nath (German voice of Shane Dyson) is born.
- 1982 — Voice actor Josh Petersdorf is born.
- 1988 — The Super-God Masterforce episode "Panic! Protect the Wild Animals!!" premieres in Japan.
- 1989 — María José Guerrero (Mexican voice of Solus Prime) is born.
- 2000 — The Car Robots episode "Mysterious Weapon! D 5" premieres in Japan.
- 2000 — The Car Robots OP single "Honō no Overdrive ~Car Robot Cybertron~" and ED single "Marionette" are released in Japan by Interchannel.
- 2006 — Galaxy Force—Vol. 12 is released on DVD in Japan by Victor Entertainment.
- 2006 — The Beast Wars Reborn text story, "The Extraordinary Reformat", is published in issue #100 of Figure Ō magazine in Japan.
- 2007 — The tenth Beast Wars Telemocha Series figure, Wolfang, is released in Japan.
- 2008 — The Animated episode "A Fistful of Energon" premieres in Canada.
- 2008 — The Animated episode "Rise of the Constructicons" premieres in the US.
- 2008 — The Animated episode "Home Is Where the Spark Is" premieres in Germany.
- 2010 — "Flames of Yesterday" goes online at the Transformers Collectors' Club members-only section.
- 2011 — The Dark of the Moon novelization is released in the US by Del Rey Books.
- 2011 — The The Transformers Complete Series DVD set is released in the US by Shout! Factory.
- 2012 — Transformers: The Ride – 3D opens in Universal Studios Hollywood.
- 2013 — The Transformers: Prime episode "Chain of Command" premieres on The Hub.
- 2013 — "Parasite of Happiness" is first published by Eaglemoss/GE Fabbri in Russia.
- 2014 — The Rescue Bots episode "The Vigilant Town" premieres on Hub Network.
- 2017 — Optimus Prime #7 is released by IDW Publishing.
- 2019 — Pierre Hatet (French voice of Springer and Kranix in The Transformers: The Movie) passes away, aged 89.
- 2019 — The Cyberverse episodes "Cube" and "Terminal Velocity" premieres in Japan.
- 2020 — The Cyberverse episodes "Alien Hunt! With Meteorfire And Cosmos" and "Journey To The Valley Of Repugnus" premieres in the U.S.
- 2022 — First day you can unlock new Transformers skins for Mobile Legends: Bang Bang's second Transformers collaboration.
- 2022 — Hasbro Pulse puts up pre-orders for Studio Series SS86-16 Arcee, SS87 Bumblebee, SS88 Sideways, SS89 Thundercracker and SS90 Galvatron.
- 2023 — First day of the Rise of the Beasts Optimus Prime, Optimus Primal and Mirage World Tour in Mexico City, Mexico.
- 2023 — The Transformers Rise of the Beats playlist is released on Spotify.
- 2024 — The EarthSpark episode "The Last Hope, Part 1" premieres on YTV in Canada.
- 2025 — The EarthSpark episode "The Butterfly Effect" premieres in Cantonese.
- 2025 — Writer Peter David dies, aged 68.
- 19?? — Dreamwave Productions colorist Ed Racho is born... and it is awesome.
- 1944 — Juan Antonio Arroyo (Castillian Spanish voice of Smelt) is born.
- 1947 — Jan Kulczycki (Polish voice of Megatron, Ironhide and Stratosphere) is born.
- 1951 — Scott Brownlee (recording engineer for the original Transformers cartoon) is born.
- 1952 — Alec Willows (voice of Tarantulas) is born.
- 1959 — Voice actor Glenn Wrage is born.
- 1967 — Yoshiko Kamei (Japanese voice of Daniel Witwicky in The Rebirth) is born.
- 1970 — Matt Hetherington (voice of Starscream in the Armada PS2 game) is born.
- 1970 — Actor Michael Benyaer (Egyptian Interpol Officer #2 in Revenge of the Fallen) is born, coming from the net.
- 1977 — Reggie Simmons and John Ho attend the premiere of Star Wars at Grauman's Chinese Theatre. Sector Seven ARG
- 1984 — Samira Fernandes (Brazilian voice of Slipstream) is born.
- 1986 — Actor Markiss McFadden (Baby Face in Dark of the Moon) is born.
- 1995 — The Transformers episode "More than Meets the Eye, Part 1" premieres in Russia.
- 2000 — Beast Wars Metals — Sssshiny! & We Have Returned are released on VHS in Japan by Pioneer LDC.
- 2005 — Beast Wars Returns — Volume 7 is released in Japan by Geneon Entertainment.
- 2005 — G.I. Joe vs. the Transformers II TPB is released by Devil's Due Press.
- 2005 — The first installment of the 15 Go! Go! comic is released in the July 2005 issue of Dengeki Hobby.
- 2006 — The 15 Go! Go! chapter "Battle Convoy Volume" is published in the July 2006 issue of Dengeki Hobby.
- 2007 — The 15 Go! Go! chapter "10 Volume" is published in the July 2007 issue of Dengeki Hobby.
- 2007 — The Transformers Collectors' Club members-only site releases online bios for the Mini-Cons Flashdrive, Jackknife, Maverick, Skull Buster, Smackdown and the Vorpal Saber.
- 2011 — Heart of Darkness #3 and The IDW Collection Volume Four are released by IDW Publishing.
- 2012 — e-HOBBY announces their collaboration with the Transformers Collectors' Club, with details to follow.
- 2013 — TakaraTomy releases Transformers GT GT-01 GT-R Prime with Misaki and GT-02 GT-R Saber with Anna, and Generations TG17 Blaster with Steeljaw and TG18 Skywarp.
- 2016 — Geneon Universal Entertainment releases a complete Legends of the Microns DVD boxset.
- 2016 — The Transformers (2012) #53 and More than Meets the Eye #53 are released by IDW Publishing.
- 2018 — Charlie Elvegård (Wheeljack in the Swedish dub of Generation 2) dies at age 74.
- 2018 — TakaraTomy releases Power of the Primes PP-01 Micronus, PP-02 Liege Maximo, PP-03 Vector Prime, PP-04 Dinobot Slash, PP-05 Windcharger, PP-06 Beachcomber, PP-07 Autobot Jazz, PP-08 Rodimus Prime, and PP-09 Optimus Prime.
- 2018 — The Netflix series The Toys That Made Us second season drops including the Transformers episode of the series.
- 2022 — Beast Wars #16 and War's End #4 are released by IDW Publishing.
- 2023 — MC Solaar's single "Tout se transforme" is released.
- 2023 — Robosen officially reveals its Transformers G1 Bumblebee animatronic figure.
- 2024 — TakaraTomy releases TL-65 Bumblebee (Animated), TL-66 Autobot Chase, TL-67 Infernac Magneous, TL-68 Windblade, SS-125 Scorponok and SS-126 Megatron.
- 2024 — Yolopark annouces the AMK Mini “House Of Magnus” 2-pack with Delta Magnus and Sunstorm.
HAPPY BIRTHDAY!
- 19?? — Tiziana Martello (Italian voice of Hank, Acid Storm and Mo Malto) is born.
- 1936 — Simon Prescott (voice of Doctor Akase) is born.
- 1939 — Comic artist Herb Trimpe is born.
- 1941 — Kan Tokumaru (voice of Germain) is born.
- 1942 — Blas García (Spanish voice of Optimus Prime in the live-action film series and another Optimus in Prime) is born.
- 1962 — José Luiz Barbeito (Brazilian voice of Air Raid, Teletraan II and Telephone operator) is born.
- 1975 — Industrial Light & Magic is founded by George Lucas.
- 1979 — Katarzyna Laska (Polish voice of Sierra)
- 1980 — Jolene Andersen (voice of Deseeus's Wrath Face) is born.
- 1982 — Tomoaki Maeno (voice of Q-Transformers Drift) is born.
- 1986 — Adeline Chetail (French voice of Sari Sumdac and Red Alert) is born.
- 1987 — Changyoung Hwang (Korean voice of Alex Malto) is born.
- 1995 — The Transformers episode "More than Meets the Eye, Part 2" premieres in Russia.
- 1999 — The Beast Wars Neo episode "Troubled DNAVI" premieres in Japan.
- 2004 — The Superlink: Original Soundtrack Mission I album is released in Japan by Interchannel.
- 2005 — Takara releases the Robot Masters RM-24 Reverse Convoy (Rebirth Megatron).
- 2005 — The TFWiki.net community is founded on Wikicities by "Nova81426".
- 2010 — The Cool Episode 3 is serialized by Kerokero Ace in their July 2010 edition.
- 2010 — The Transformers #7 and The IDW Collection Volume One are released by IDW Publishing.
- 2010 — Transformers makes its network television debut in the United States on the ABC television network, airing at 8pm EST. The airing includes never before seen footage.
- 2012 — TakaraTomy releases EZ Collection Wheeljack with Starhammer, Ironhide, and Dreadwing.
- 2012 — The Prime episode "Toxicity" premieres on The Hub.
- 2012 — The Super Robot Lifeform Transformers: Prime episode "Secret Sword Transformation! Introducing Wheeljack" premieres in Japan.
- 2012 — Transformers: Dark of the Moon makes its premiere on the Brazilian tv channel Telecine.
- 2012 — Toonami relauches its run on Cartoon Network for the first time since 2008.
- 2013 — Transformers: All Spark Episode 7 "Ray of Hope" and the one-shot Transformers GT manga is serialized in Japan by Kerokero Ace in their July 2013 issue.
- 2018 — TakaraTomy releases Street Fighter II × Transformers Convoy [Ryu] vs Megatron [Vega] and Hot Rodimus [Ken] vs Arcee [Chun-Li].
- 2023 — First day of the Rise of the Beasts Optimus Prime, Optimus Primal and Mirage World Tour in London, England.
- 2024 — The Transformers: EarthSpark episode "Bumblebee Returns!" premieres in Japan.
- 2025 — Transformers Go! Go! Wild King web special #3 is published.
- 19?? — Transformers writer, creative consultant and superfan Daniel Arseneault is born.
- 1935 — Gunnar Udden (Swedish voice of Mudflap) is born.
- 1952 — Johan Wahlström (Swedish voice of Transformers: Generation 2 Megatron) is born.
- 1957 — Writer Jim Salicrup is born.
- 1964 — Comic artist and editor Steve White is born.
- 1965 — Vagner Santos (Brazilian voice of Lockdown, Porter C. Powell, Headmaster and Soundblaster) is born.
- 1969 — Massimiliano Manfredi (Italian voice of Cade Yeager and Orion Pax/Optimus Prime) is born.
- 1973 — Edu Rayce (Brazilian voice of Lockdown) is born.
- 1975 — Matti Klemm (German voice of Tidal Wave) is born.
- 1985 — Andrew Francis (voice of Billy in Armada) is born.
- 1988 — Bernardo Berro (Brazilian voice of Chop Shop) is born.
- 1990 — The Super-God Masterforce episode "The Return of the Decepticons" premieres in Malaysia.
- 1990 — Danny McKinnon (voice of Shaun) is born.
- 1998 — The Beast Wars II episode "The Strongest Tag Team?" premieres in Japan.
- 2004 — Takara releases Super Link SD-14 Laserwave
- 2004 — Gamers stores offer the Energy Raiden Overdrive Edition as a promotional gift with the purchase of 2000 yen worth of Super Link toys.
- 2005 — Andrea Santamaria (European French voice of Otis Watson) is born.
- 2009 — Revenge of the Fallen #2 is released outside of the US by IDW Publishing.
- 2009 — Customization class is held for BotCon 2009.
- 2011 — The Transformers: Animated volume 10 DVD is released by Paramount Japan.
- 2011 — The Linkin Park single "Iridescent" is released by Warner Bros..
- 2015 — More than Meets the Eye #41 is released by IDW Publishing.
- 2016 — "Deadly Aim" is released by Fun Publications.
- 2017 — The Robots in Disguise episode "Bee Cool" premieres on Cartoon Network.
- 2017 — The Robots in Disguise episodes "King of the Hill (Part 1)" premieres in Hungary.
- 2017 — TakaraTomy releases Masterpiece MP-37 Artfire and Legends LG42 Godbomber.
- 2023 — Transformers: Rise of the Beasts has its world premiere at Marina Bay Sands in Singapore.
- 2023 — TakaraTomy releases Transformers: Legacy TL-27 Slug, TL-28 Sludge, TL-29 Soundblaster and TL-30 Scraphook
- 2024 — TakaraTomy annouces the cancellation of the EarthSpark ESD-10 DX Prowl figure for unknown reasons.
- 2024 — Flame Toys reveals their Kuro Kara Kuri Starscream.
- 2025 — The Transformers Wild King Extra Volume Exciting Battle! Wildocking! episode New Energy Beasts Appear!? New Combination Showdown! is released on the TakaraTomy YouTube channel.
- 1921 — Ronaldo Magalhães (Portuguese voice of various characters in the original cartoon and The Transformers: The Movie) is born.
- 1940 — Composer Kyōhei Tsutsumi is born.
- 1954 — Townsend Coleman (voice of Rewind and Animated Sentinel Prime) is born. SPOOOOOON!
- 1956 — Patrick Béthune (European French voice of Jetfire in Revenge of the Fallen and Harold Attinger in Age of Extinction) is born.
- 1967 — Singer Mickey-T is born.
- 1976 — Comic colorist Thomas Deer is born.
- 1976 — Liam O'Brien (voice of Air Raid and Cyclonus in the various War for Cybertron games and Kickback and Underbite in Robots in Disguise) is born.
- 1985 — Agnieszka Wajs (Polish voice of Sari Sumdac and others) is born.
- 1999 — Beast Wars II—ACT. 14 is released on VHS in Japan by Pioneer LDC.
- 2003 — Legends of the Microns—Volume 2 is released on DVD in Japan by Columbia Music Entertainment, coming with the "Linkage Part 2" mini-comic and exclusive Top Gear toy.
- 2005 — The Galaxy Force episode "Fight! Liger Jack" premieres in Japan.
- 2009 — BotCon 2009 begins.
- 2009 — Web of Deception and Time-Quake are published in the UK by HarperCollins Publishers.
- 2009 — Revenge of the Fallen #2 is released in the US by IDW Publishing.
- 2009 — Autobot Stronghold is released by Soap Creative and LG Electronics
- 2012 — TakaraTomy releases Prime AM-10 Bulkhead and AM-11 Arcee.
- 2012 — e-HOBBY reveals the first part of their collaboration with the Transformers Collectors' Club: 150 BotCon 2012 boxed sets are made available to Japanese customers. The sets sell out in 30 minutes.
- 2013 — Michael Bay reveals the vehicle modes for two new Autobots in Age of Extinction: a C7 Corvette Stingray and a Bugatti Grand Sport Vitesse on michaelbay.com.
- 2013 — Principal Photography for Age of Extinction begins.
- 2013 — Fun Publications publishes Blaster VS Soundwave 2013 on their YouTube channel to promote BotCon 2013.
- 2014 — Robots in Disguise #29 is released by IDW Publishing.
- 2015 — Splatoon is released in Japan.
- 2015 — Transformers Prime — La Seconda Stagione Completa is released to home media in Italy by Primal Screen.
- 2016 — The Rescue Bots episode "Ghost in the Machine" premieres on Discovery Family.
- 2016 — TakaraTomy releases Legends LG-20 Skids and Adventure TAV 44 Sideswipe and Bumblebee Supreme Armor Set, TAV 45 Optimus Prime and Grimlock Supreme Armor Set, TAV 46 Overload, TAV 47 Crazybolt, TAV 48 EZ Collection Team Bumblebee vs. Thunderhoof Set and TAV 49 EZ Collection Autobots vs. Clampdown Set.
- 2017 — The Robots in Disguise episodes "King of the Hill (Part 2)" premieres in Hungary.
- 2022 — TakaraTomy releases Studio Series SS-78 Ravage, SS-79 Shockwave, SS-80 Autobot Ratchet, SS-81 Soundwave and Collaborative Tyrannocon Rex / Autobot JP93.
- 2023 — The Beast Wars Again episode "Spider Woman's Kick (Part 1)" airs on TV Tokyo.
- 2025 — G.I. Joe #7, Void Rivals #19, The Transformers Compendium Volume 1 TPB, and Void Rivals Volume 3: The Key to Vector Theta TPB are released by Image Comics and Skybound Entertainment.
- 1941 — Model and background designer Romeo Francisco is born.
- 1949 — Robert Axelrod (voice of Movor) is born.
- 1951 — Michael O'Neill (Tom Banachek in Transformers (2007)) is born.
- 1968 — Chiara Colizzi (Italian voice of Revenge of the Fallen Arcee) is born.
- 1969 — Actor Anthony Azizi (Sulimani in Dark of the Moon) is born.
- 1973 — Anne Mathot (French voice of Bud Hansen, Override and Thunderblast in Transformers: Cybertron) is born.
- 1975 — Tomoko Kaneda (voice of Bomberman from DreamMix TV World Fighters) is born.
- 1977 — Sandrine Mittelstädt (German voice of Airazor in Transformers: War for Cybertron Trilogy) is born.
- 1984 — The first Transformers comic book, The Transformers #1, is released in the US by Marvel Comics.
- 1987 — The Fight! Super Robot Lifeform Transformers 2010 episode "Grimlock's New Brain" airs in Japan.
- 1992 — Erica Lindbeck (Second voice of Windblade) is born.
- 1995 — The Transformers episode "More than Meets the Eye, Part 3" premieres in Russia.
- 1999 — Darcy Pedrosa (Second Brazilian voice of Optimus Prime in the original cartoon) passes away at age 69.
- 2003 — More than Meets the Eye Issue #2 is published in the US by Dreamwave Productions.
- 2006 — The ninth show in the Kiss Players radio drama series airs in Japan on the "Lyrian Moe-tchao" program.
- 2007 — The soundtrack to The Transformers: The Movie is re-released on CD with bonus tracks in the US by Sony Legacy.
- 2007 — Megatron kicks off his invasion of Earth by devastating New York City. All Hail Megatron #1 Scrapper
- 2009 — Street date for the release of Transformers: Revenge of the Fallen toys, though many retailers ignored this and put them out earlier.
- 2009 — Second day of BotCon 2009.
- 2010 — The Transformers Animated episode "Trap Time" debuts in Japan.
- 2010 — Alternity Starscream and Skywarp, and Device Label Cheetus are released in Japan.
- 2013 — Beast Hunters #1, More than Meets the Eye #17 and The IDW Collection Volume Eight are released by IDW Publishing.
- 2013 — Michael Bay reveals the new look for Optimus Prime's vehicle mode in Age of Extinction on michaelbay.com.
- 2014 — TakaraTomy publishes Mode "Eva" chapter 2
- 2015 — The war for Inkopolis begins as Splatoon is released in the United States & Europe.
- 2018 — The Power of the Primes episode "Athenaeum Sanctorum" premieres on go90 and Tumblr.
- 2019 — Transformers #6 is released by IDW Publishing. Transformers: The Definitive G1 Collection Volume 80: Requiem of the Wreckers is released by Hachette Paperworks.
- 2021 — TakaraTomy releases Kingdom KD-06 Warpath and KD-07 Cyclonus and Studio Series SS-62 Scourge, SS-63 Blurr and SS-64 Grimlock & Autobot Wheelie, plus Earthrise ER EX-25 Dominus Criminal Pursuit, Kingdom KD-03 Optimus Prime, and Siege SG-EX Soundblaster are released as TakaraTomy Mall exclusives.
- 2021 — Transformers Go! Go! Mission: Snacks, All to Myself! is first published.
- 2021 — The Rescue Bots Academy episodes "Griffin Rock Rocks!" and Bot Battle" premieres in the United States.
- 2023 — First day of the Rise of the Beasts Optimus Prime, Optimus Primal and Mirage World Tour in London, United Kingdom.
- 1923 — Walter Reichelt (German voice of Zarak and Arcana) is born.
- 1935 — Lee Gunther, executive producer of the original Transformers cartoon, is born.
- 1947 — Luiz Carlos de Moraes (Brazilian voice of Starscream in the The Movie and Dinobot) is born.
- 1956 — Robert Guilmard (French voice of Ultra Magnus in Transformers: Prime) is born.
- 1958 — The world jumps the shark when Ted McGinley (voice of Denny Clay) is born.
- 1962 — Arianne Borbach (German voice of Botanica, Charlotte Mearing and Airazor) is born.
- 1969 — Niclas Fransson (Swedish voice of Starscream, Signal Flare and Skyblast) is born.
- 1972 — Sōichirō Hoshi (voice of Q-Transformers Tracks and Yukimura Sanada) is born.
- 1974 — Fanny Roy (French voice of Hank in Robots in Disguise) is born.
- 1977 — Tsuyoshi Aoki (Japanese voice of Stone) is born.
- 1978 — Director Kenji Itoso is born in Hiroshima, Japan.
- 1985 — "The Power of Love" by Huey Lewis and the News is recorded.
- 1986 — The Fight! Super Robot Lifeform Transformers episode "Charge, Aerialbots!" premieres in Japan.
- 1989 — The Victory episode "The New Warrior - Hellbat" premieres in Japan.
- 1998 — The Beast Wars episode "The Probe" premieres in Germany.
- 2002 — The Robots in Disguise Sideways vs Axer set is released in Japan as a Toys"R"Us-exclusive "USA Edition".
- 2003 — The Legends of the Microns episode "前兆 (きざし) - decisive battle" premieres in Japan.
- 2003 — The Transformers: New Order TPB is released by Titan Books.
- 2007 — The Transformers: Spotlight, Vol. 1 is released by IDW Publishing.
- 2009 — Third day of BotCon 2009.
- 2009 — The three Guardian Mini-Con Team toys are made available with the purchase of 2,000 yen's worth of Revenge merchandise at multiple Japanese stores.
- 2010 — Robert O. Smith (voice of Cybertron Soundwave) dies.
- 2012 — The Transformers: Robots in Disguise #5 is released by IDW Publishing.
- 2015 — The Robots in Disguise episode "Adventures in Bumblebee-Sitting!" premieres on Cartoon Network in the USA.
- 2015 — The Rescue Bots episode "More than Meets the Eye" premieres on Discovery Family.
- 2015 — TakaraTomy releases Adventure TAV15 Lockdown, TAV16 Bombshell, TAV17 Shrapnel and TED 07 Bumblebee and Legends LG13 Megatron.
- 2015 — Splatoon is released in Australia.
- 2017 — Shout! Factory releases the Transformers: Robots In Disguise Collection: Overloaded & Decepticon Island.
- 2018 — Optimus Prime #19 and Requiem of the Wreckers one-shot are released by IDW Publishing.
- 2018 — Transformers: The Definitive G1 Collection: Volume 49: The Iron Age is released by Hachette Partworks.
- 2020 — TakaraTomy releases Studio Series SS-50 Roadbuster and SS-51 Decepticon Scrapper and Earthrise ER-03 Wheeljack and ER-04 Ironworks, plus ER EX-03 Trip-Up & Daddy-O is released as a TakaraTomy Mall exclusive.
- 2020 — The Rescue Bots Academy episodes "Power Up And Energize" and "Shall We Dance?" premiere on Discovery Family.
- 2022 — Transformers Go! Go! #11 is published.
- 2024 — Club Jouet reveals the Transformers One Prime Changers Bumblebee & Sentinel Prime.
- 2025 — TakaraTomy officially reveals wave 3 of the Wild King toyline.
- 2025 — The first trailer promo for Transformers: Cyberworld is released.
- 2025 — Go! Go! issue Watch Out for Giraffes at the Beach! is released.
- 1954 — Bernard Métraux (French voice of Beast Wars Cheetor and Dark of the Moon Soundwave) is born.
- 1958 — Director of photography Mitchell Amundsen is born.
- 1962 — Gustavo López (Mexican voice of Lockdown) is born.
- 1964 — Pascal Sellem (French voice of Cosmos in EarthSpark) is born.
- 1970 — Cláudio Galvan (Brazilian voice of Wheeljack and Mudflap) is born.
- 1971 — Bill Millsap (voice of the Narrator in Transformers: Galactic Trials) is born.
- 1980 — Giuliana Atepi (Italian voice of Cruelty) is born.
- 1982 — Writer Ian Flynn is born.
- 1986 — Hiroko Ushida (Japanese voice of Alice) is born.
- 1988 — The Super-God Masterforce episode "Super Warriors - The Godmaster Brothers" premieres in Japan.
- 1990 — Víctor Díaz (Latin-American Spanish voice of Carlos Lopez) is born.
- 1998 — Beast Wars: Transformers for the PC is released.
- 2000 — The Car Robots episode "Counter Arrow's Betrayal?!" premieres in Japan.
- 2006 — G.I. Joe vs. the Transformers: The Art of War #3 is released by Devil's Due Press. Infiltration #5 is released by IDW Publishing.
- 2007 — Transformers: The Ark is released by IDW Publishing. Transformers Mix & Match and Transformers Prime Time are released by Reader's Digest. Transformers: Identification and Price Guide is released by Krause Publications. Transformers: The Movie Storybook, Meet the Autobots, Meet the Decepticons and Transformers: The Junior Novel are released by HarperCollins Publishers. The Transformers novelization is released by Del Rey Books. Whew!
- 2008 — The Transformers Animated episode "SUV: Society of Ultimate Villainy" premieres in Canada.
- 2008 — The Transformers Animated episode "A Fistful of Energon" premieres in the United States.
- 2008 — The Transformers Animated episode "Total Meltdown" premieres in Germany.
- 2008 — Heitor Fragas (Brazilian voice of Robby Malto) is born.
- 2009 — The fourth and final day of BotCon 2009.
- 2013 — The Transformers: Prime episode "Plus One" premieres on The Hub.
- 2013 — Transformers Prime — Vol. 20 and Transformers Prime — Vol. 21 are released to home media in Japan by Avex Trax.
- 2014 — The Rescue Bots episode "Buddy System" premieres on Hub Network.
- 2015 — The Robots in Disguise episode "Adventures in Bumblebee-Sitting!" premieres in Japan.
- 2016 — The Rescue Bots episode "Enemy of My Enemy" premieres on Pop in the UK.
- 2016 — The second teaser trailer for Transformers: The Last Knight is released.
- 2017 — Till All Are One #10 and Micronauts: Wrath of Karza #2 are released by IDW Publishing.
- 2017 — Transformers: The Definitive G1 Collection: Volume 50: Heart of Darkness is released by Hachette Partworks.
- 2019 — TakaraTomy releases Siege SG-20 Pteraxadon, SG-21 Red Heat and Stakeout, SG-22 Chromia, SG-23 Prowl, and SG-24 Soundwave.
- 2019 — The Transformers Classics Vol.4 is published by Hero-X.
- 2019 — Xebec becomes defunct.
- 2020 — The Cyberverse episodes "Rack 'n' Ruin 'n' Ratchet" and "Dweller In The Depths" premieres in the U.S.
- 2021 — Villagebooks to release volume 4 of The Transformers: More than Meets the Eye.
- 2022 — It's a Transformers Tuesday and Hasbro Pulse officially reveals and puts up pre-orders for Shattered Glass Collection Blaster & Rewind.
- 2023 — Hasbro Pulse reveals and puts preorders up for TakaraTomy's Rise of the Beasts Optimus Primal.
- 2023 — Transformers Go! Go! #34 is published.
- 2024 — TakaraTomy officially reveals the 5th and final deluxe wave of Earthspark.
- 2024 — The EarthSpark episode "The Last Hope, Part 2" premieres on YTV in Canada.
- 2025 — TakaraTomy releases the Studio Series SS-143 Double Punch, SS-144 Decepticon Hatchet, SS-145 Galvatron, SS-146 Apelinq, SS GE-10 Skywarp, Synergenex Transformers × Godzilla Optimus Prime Type MFS-3 Kiryu and Megatron Type Godzilla.
- 2025 — The EarthSpark episode "Togetherness" premieres in Cantonese.
- 2026 — Final day of the Transformers Meet Japan pop up event at the Miraiya Books Tsudanuma Store in Miyagi, Japan.
