List of Cybertron episodes

Transformers: Cybertron (2005-2006)

#	Title	Japanese title	Writer	Director	US airdate	Japanese Airdate	Production code
1	"Fallen"	聖なる故郷 セイバートロン星崩壊!? The Sacred Homeworld, Planet Cybertron, Destroyed?!	Hiro Masaki	Manabu Ono	September 19, 2005	January 8, 2005
A massive black hole forces the Autobots to evacuate Cybertron. And to make matters worse, Megatron is back...
2	"Haven"	秘密基地を守れ! Protect the Secret Base!	Gyō Yamatoya	Masashi Nagao	September 20, 2005	January 22, 2005
Can the Autobots finish protecting their base before the Decepticons discover it?
3	"Hidden"	地球での暮らし方、教えます A Lesson in Living on Earth	Manabu Ishikawa	Jun'ichi Watanabe	July 2, 2005	January 29, 2005
The Autobots learn that being robots in disguise is more complicated than they thought.
4	"Landmine"	チップスクエアを探せ! Find the Chip Square!	Genki Yoshimura	Kunitoshi Okajima	July 9, 2005	February 5, 2005
The Autobots investigate their first clue to the Omega Lock, and Landmine reveals there's more to him than meets the eye.
5	"Space"	脅威の惑星スピーディア Wondrous Planet Speedia	Hiro Masaki	Fumiharu Kamanaka, Megumi Sakai (asst. dir.)	July 16, 2005	February 12, 2005
Scattorshot and Bud use the space bridge to travel beyond Earth's atmosphere, but a Decepticon attack could spell their doom!
6	"Rush"	最速の勇者 ニトロコンボイ The Fastest Hero, Nitro Convoy	Kazuhisa Sakaguchi	Mitsuru Kawasaki	July 23, 2005	February 19, 2005
Hot Shot and Red Alert meet the Velocitron locals.
7	"Speed"	激闘! スタースクリーム Fierce Fighting! Starscream	Genki Yoshimura	Atsushi Takeyama	July 30, 2005	February 26, 2005
The search for the Cyber Planet Keys proceeds apace... but neither the Autobots nor the Decepticons are aware of the treachery quietly brewing at the heart of the conflict!
8	"Collapse"	人間の街を救え! Save the Human City!	Kazuhiko Sōma	Masashi Nagao	August 6, 2005	March 5, 2005
When a newly opened gold mine causes a mountain to collapse, putting the kids' hometown in danger, it's time for the Autobots do what they do best. Also: Ninjas. They are darned annoying!
9	"Time"	ベクタープライムの決断 Vector Prime's Decision	Hiro Masaki	Tsuyoshi Masui	August 13, 2005	March 12, 2005
The quest for the Omega Lock forces Vector Prime to take the greatest of risks!
10	"Search"	魔獣惑星アニマトロス Demon Beast Planet Animatros	Hiro Masaki	Kunitoshi Okajima	August 20, 2005	March 19, 2005
The Autobots' quest heats up as their civilian friends join the search, and the location of the second Cyber Planet Key is discovered.
11	"Deep"	怪竜王フレイムコンボイ Mystical Dragon King Flame Convoy	Manabu Ishikawa	Fumiharu Kamanaka, Megumi Sakai (asst. dir.)	August 27, 2005	March 26, 2005
In the dark ocean depths, the search for the Omega Lock enters its final phase.
12	"Ship"	アトランティスの攻防 Atlantis's Offense and Defense	Gyō Yamatoya	Isao Takayama	September 3, 2005	April 2, 2005
In the shadow of the Moon, Optimus Prime battles Megatron for possession of the Omega Lock!
13	"Hero"	グレートレース開始! The Great Race Starts!	Kazuhiko Sōma	Atsushi Nakayama	September 10, 2005	April 9, 2005
Six straight episodes of the same damn race over and over again start here! Woo-hoo!
14	"Race"	バドとホップの都会旅行 Bud and Hop's Trip to the City	Kazuhisa Sakaguchi	Masashi Nagao	September 17, 2005	April 16, 2005
While the great race kicks into high gear on Velocitron, Bud and Lori go undercover on Earth, and Starscream recruits a new Decepticon.
15	"Detour"	野獣転生! ライガージャック Wild Beast Reincarnation! Ligerjack	Hiro Masaki	Mitsuru Kawasaki	October 7, 2005	April 23, 2005
Hot Shot teaches Override the meaning of Autobot honor during the second heat of the great race, while Overhaul faces a challenge of his own as he trains hard to beat Scourge.
16	"Savage"	リンクアップ! ライガーコンボイ Link Up! Liger Convoy	Hiro Masaki	Matsuo Asami	October 10, 2005	April 30, 2005
Optimus Prime meets the all-new Overhaul and together, they discover a new power!
17	"Sand"	灼熱のデッドヒート Scorching Dead Heat	Kazuhisa Sakaguchi	Fumiharu Kamanaka, Megumi Sakai (asst. dir.)	October 11, 2005	May 7, 2005
While Coby lends Hot Shot a hand during the penultimate phase of the great race, Sideways orchestrates a battle that pits Scourge against the power of Optimus Prime's Savage Claw Mode.
18	"Champion"	栄光のプラネットカップ The Glorious Planet Cup	Kazuhiko Sōma	Kei'ichirō Kawaguchi	October 12, 2005	May 14, 2005
It's Hot Shot and Coby versus Override in the final stage of the race for the Planet Cup!
19	"Ice"	オーロラの彼方の死闘 Deadly Battle at the Edge of the Aurora	Gyō Yamatoya	Atsushi Nakayama	October 13, 2005	May 21, 2005
On a mission to the North Pole, the kids once again encounter Lucy Suzuki and the truth about the Autobots comes out.
20	"Honor"	戦え! ライガージャック Fight! Ligerjack	Manabu Ishikawa	Mitsuru Kawasaki	October 14, 2005	May 28, 2005
Defeated by Scourge once again, Leobreaker learns of his foe's past and finds it surprisingly familiar...
21	"Primal"	ローリ、魔獣の星へ Lori Goes to the Planet of Demon Beasts	Manabu Ishikawa	Masashi Nagao	October 17, 2005	June 4, 2005
Megatron is determined to stop Optimus Prime and Scourge's duel, but the leader of Jungle Planet will not be denied!
22	"Trust"	決戦! アニマトロス Climatic Battle! Animatros	Hiro Masaki	Oyunamu	October 18, 2005	June 11, 2005
Optimus Prime's trust in Leobreaker is all that stands between the Decepticons and Jungle Planet's Cyber Planet Key.
23	"Trap"	怪物たちの復活 Revival of the Monsters	Kazuhiko Sōma	Atsuhi Nigorikawa	October 19, 2005	June 18, 2005
As the quest for the third Cyber Planet Key begins, Starscream finally makes his move!
24	"Invasion"	地球の守護神 ライブコンボイ Guardian of the Earth, Live Convoy	Kazuhiko Sōma	Megumi Sakai	October 20, 2005	June 25, 2005
The Earth is plunged into chaos as Starscream's forces sweep the planet...but the Autobots are about to gain two new allies in their fight!
25	"Retreat"	3つ目のプラネットフォース The Third Planet Force	Hiro Masaki	Mitsuru Kawasaki, Manabu Ono	October 21, 2005	July 2, 2005
With the kids held captive by the government, Starscream's forces closing in and the Omega Lock and Cyber Planet Keys on the line, the Autobots have only one desperate choice left...
26	"Revelation"	宇宙滅亡へのカウントダウン Countdown to the Destruction of the Galaxy	Hiro Masaki	Atsushi Nakayama	October 24, 2005	July 9, 2005
As if searching for Starscream and decoding a mysterious message from Cybertron wasn't trouble enough for the Autobots, Megatron and the Decepticons are free and back on Earth!
27	"Critical"	転生! バンガードチーム Reincarnation! Vanguard Team	Kenji Sugihara	Matsuo Asami	March 11, 2006	July 16, 2005
Just as things look their darkest, Hot Shot, Red Alert and Scattorshot get a new lease on life!
28	"Assault"	宇宙から来たスゴイ奴 The Amazing Guy from Outer Space	Hiro Masaki	Masashi Nagao	March 18, 2006	July 23, 2005
In the midst of a battle royale on Starscream's island base, Autobot outsider Wing Saber joins the fray!
29	"Starscream"	野望の王 邪心全開 King of Treachery—Evil Completely Unleashed	Hiro Masaki	Naotaka Hayashi	March 25, 2006	July 30, 2005
The reign of Starscream is begun!
30	"United"	高速機動合体 ソニックコンボイ High Speed Fusion—Sonic Convoy	Gyō Yamatoya	Megumi Sakai	April 1, 2006	August 6, 2005
Memories of the past push Wing Saber and Optimus Prime to try a dangerous technique in hopes of defeating the super-powered Starscream.
31	"Cybertron"	超絶変形! 開放される力 Transcendental Transformation! The Released Power	Manabu Ishikawa	Atsuhi Nigorikawa	April 8, 2006	August 13, 2005
In pitched final battle on Cybertron, Megatron apparently meets his end...but has the Autobots' mission been worth it, or have they only hastened their own destruction?
32	"Balance"	よみがえった巨大神 The Revived Giant God	Hiro Masaki	Mitsuru Kawasaki, Kenji Setō (asst. dir.)	April 15, 2006	August 20, 2005
Primus speaks, and ancient history is revealed, as is the location of the fourth and final Cyber Planet Key.
33	"Darkness"	暗黒からの逆襲 Counterattack from the Darkness	Kazuhisa Sakaguchi	Atsushi Nakayama	September 5, 2006	August 27, 2005
Megatron is back, and his mysterious dark powers give birth to two new threats!
34	"Memory"	アトランティスの迷路 Atlantis's Labyrinth	Kazuhiko Sōma	Atsushi Nakayama	September 6, 2006	September 3, 2005
Separated from the Autobot and their Mini-Con friends, Coby, Bud and Lori fight alone against Sideways.
35	"Escape"	それゆけ脱出大作戦 The Big Escape Plan Go	Kenji Sugihara	Masashi Nagao	September 7, 2006	September 10, 2005
With Sideways on their tail, the kids and the Mini-Cons must navigate the labyrinth of the Atlantis and alert the Autobots on Cybertron to their plight.
36	"Family"	そして、旅立ちの時 And So, It Is Time to Go on a Journey	Kazuhisa Sakaguchi	Naotaka Hayashi	September 8, 2006	September 17, 2005
As the Autobots make preparations to travel to Gigantion, Coby and Lori confront their parents with the truth.
37	"Titans"	激突! 砕け散る野望 Clash! The Crushed Ambition	Gyō Yamatoya	Megumi Sakai	September 11, 2006	September 24, 2005
The Autobots' attempt to reactivate Primus leads to a literal war of the worlds!
38	"Warp"	超時空トンネル突破 Breaking Through the Super Space-Time Tunnel	Manabu Ishikawa	Matsuo Asami	September 12, 2006	October 1, 2005
The Autobots head for the warp-hole leading to the alternate universe where Gigantion rests.
39	"Giant"	ギガロニアのメガロコンボイ Megalo Convoy of Gigalonia	Hiro Masaki	Mitsuru Kawasaki	September 13, 2006	October 8, 2005
The Autobots find the Giant Planet and seek out its inhabitants. New allies are made on both sides of the battle.
40	"Fury"	マスターガルバトロン降臨 Enter Master Galvatron	Kenji Sugihara	Kei'ichirō Kawaguchi	September 14, 2006	October 15, 2005
In the wake of defeat, Megatron isn't happy.
41	"City"	地下世界へGO!! To the Underworld, GO!!	Kazuhiko Sōma	Atsushi Takeyama	September 15, 2006	October 22, 2005
The Autobots split up to head for the inner layers of Gigantion, and Coby reveals his latest creation.
42	"Ambush"	対決! ローリ VS クロミア Showdown! Lori VS Chromia	Gyō Yamatoya	Atsushi Nakayama	September 18, 2006	October 29, 2005
The Autobots split up to search the lower levels of Gigantion for its Cyber Planet Key, while the Decepticons do the same. Lori and Thunderblast get acquainted.
43	"Challenge"	プラネットXの秘密 The Secret of Planet X	Manabu Ishikawa	Megumi Sakai	September 19, 2006	November 5, 2005
The Autobot search teams continue to explore the depths of Gigantion, the Jungle Planet is in danger, and the mystery of Planet X is revealed.
44	"Scourge"	大きな星の小さな町 The Large Planet's Little City	Kenji Sugihara	Matsuo Asami	September 20, 2006	November 12, 2005
Scourge comes to some tough decisions about himself, with the help of some little friends.
45	"Optimus"	最後のプラネットフォース The Final Planet Force	Kazuhisa Sakaguchi	Masashi Nagao	September 21, 2006	November 19, 2005
As both sides approach the ancient Lemuria starship, Optimus Prime suffers a breakdown.
46	"Showdown"	大いなる野望の果て The Extremities of a Great Ambition	Gyō Yamatoya	Naotaka Hayashi	September 22, 2006	November 26, 2005
Galvatron and Starscream clash for control of the Omega Lock and the Cyber Planet Keys, and the Autobots are caught in the middle.
47	"Guardian"	永遠の時空監視者 Forever the Watcher Over Space-Time	Hiro Masaki	Kenji Setō	September 25, 2006	December 3, 2005
To return the Autobots to their home universe, Vector Prime makes the ultimate sacrifice
48	"Homecoming"	サイバトロン大集結 Great Cybertron Gathering	Kazuhiko Sōma	Hiroaki Kudō	September 26, 2006	December 10, 2005
With the black hole causing chaos across the universe, it is time for the children of Primus to unite or be destroyed!
49	"End"	終末の時、希望の光を The Final Moments, Light of Hope	Kenji Sugihara	Atsushi Takeyama	September 27, 2006	December 17, 2005
In the dark heart of the black hole, the five planet leaders battle Galvatron for the fate of the universe.
50	"Unfinished"	ギャラクシーコンボイVSマスターガルバトロン 最終決戦! Galaxy Convoy VS Master Galvatron—The Final Battle!	Gyō Yamatoya	Manabu Ono	September 28, 2006	December 24, 2005
As the Autobots race to save Jungle Planet, Optimus Prime and Galvatron have their final battle.
51	"Beginning"	新たなる旅立ち A New Journey	Manabu Ishikawa	Mitsuru Kawasaki	September 29, 2006	December 31, 2005
With the threats of Galvatron and the black hole at last extinguished, the Autobots must look to the future.
52	"Inferno"	トランスフォーマーとの遭遇 Encounter with the Transformers	Hiro Masaki	Kahoru Igusa	October 2, 2006	January 15, 2005
Some other things happen.