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Season guide

Transformers: Cybertron: Season 1

52 episodes Premiered Jan 8, 2005 Updated Oct 15, 2026
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Season 1 Episodes

Episode Guide

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Season 1: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

Time Saved 0.5h Skipping 1 filler episode
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Mytharc (5): Crucial lore & season climaxes
Core (46): Character development & subplots
Side Quest (1): Standalone / filler
S1·E1 Mytharc

Fallen

Jan 8, 2005 · 30 min

When Cybertron is threatened by a colossal black hole, Optimus Prime and the Autobots give the order to evacuate the planet. However, a mysterious stranger holds one last hope...

S1·E2 Core

Inferno

Jan 15, 2005 · 30 min

In the final episode of Cybertron peace has settled on the Earth, but new information will reveal why Landmine arrived on Earth and not elsewhere and why Scattershot had such unusu

S1·E3 Core

Haven

Jan 22, 2005 · 30 min

With the help of their human friends, the Autobots construct a new HQ on Earth, but will Megatron discover their secret base before it's finished...

S1·E4 Core

Hidden

Jan 29, 2005 · 30 min

The Autobots attempt to blend in by assuming alternate transformation modes suitible for Earth. Meanwhile, the Decepticons enagage human military forces, and the Autobots are force

S1·E5 Core

Landmine

Feb 5, 2005 · 30 min

Landmine tries to adjust to life on Earth while recovering from the injury Starscream's null cannons inflicted on him. Meanwhile, the Autobots discover what planet the second cyber

S1·E6 Mytharc

Space

Feb 12, 2005 · 30 min

Bud is taken into space so he can see what the Earth is really like, but trouble occurs when he and Scattershot must be saved while the others are fighting against Thundercracker a

S1·E7 Core

Rush

Feb 19, 2005 · 30 min

Hotshot and Megatron race against Override in an attempt to win the first cyber planet key. Will either win when Crumplezone and Ransack are interferring?

S1·E8 Core

Speed

Feb 26, 2005 · 30 min

Starscream plots how he can defend his title as Megatron's right-hand man while Thundercracker lures the Autobots into a trap. Meanwhile, Hot Shot tries another attempt to beat Ove

S1·E9 Core

Collapse

Mar 5, 2005 · 30 min

Megatron searches for the Cyber Planet Key with extreme force, while the Autobots try to stop the massive earthquakes that are threatening the city.

S1·E10 Core

Time

Mar 12, 2005 · 30 min

Red Alert becomes concerned at the desperate measures Hot Shot is taking to beat Override, while Vector Prime and the kids travel to the Sahara in search of the Omega Lock.

S1·E11 Filler

Search

Mar 19, 2005 · 30 min

The Autobots join Vector Prime to search for the Omega Lock, while Overhaul is left stranded by a surprise attack by Megatron and Starscream.

S1·E12 Core

Deep

Mar 26, 2005 · 30 min

Overhaul and Megatron try to convince inhabitants of the Jungle Planet of their 'good' intentions, while the Autobots investigate the appearance of a new Atlantean symbol.

S1·E13 Core

Ship

Apr 2, 2005 · 30 min

After the "Atlantis" ship disappeared, Optimus Prime and Megatron head to the moon where it's hiding while Vector Prime and the kids locate the Omega Lock. Will the Autobots preven

S1·E14 Core

Hero

Apr 9, 2005 · 30 min

Optimus discovers that Hot Shot has disobeyed his orders while Red Alert has covered for him. However, he is forced to put his trust into Hot Shot to win the Cyber Key from Overrid

S1·E15 Core

Race

Apr 16, 2005 · 30 min

Hot Shot and the Autobots battle Ransack and Crumplezone in the first round, while Starscream continues to build his forces when he recruits Mudflap and Lori and Bud uncover inform

S1·E16 Core

Detour

Apr 23, 2005 · 30 min

As the race for the Speed Planet Cup continues, Hot Shot teaches Override the Autobots' code of honour, while Overhaul faces Scourge on the Jungle Planet.

S1·E17 Core

Savage

Apr 30, 2005 · 30 min

Koby helps Hot Shot to train for the gruelling next leg of the Speed Planet Cup, while Optimus Prime and Vector Prime answer a distress call from the Jungle Planet.

S1·E18 Core

Sand

May 7, 2005 · 30 min

Hot Shot takes a dangerous gamble in the next round of the Speed Planet Cup, while Sideways tries to pit the Autobots against the Decepticons against each other...

S1·E19 Core

Champion

May 14, 2005 · 30 min

After the terrible injuries sustained in the last race, Hot Shot cannot finish the final race on his own... Leaving Koby to enter the tournament as Hot Shot's driver.

S1·E20 Core

Ice

May 21, 2005 · 30 min

Bud, Lori and Koby encounter government scientist Professor Suzuki while investigating strange phenomena at the North Pole, while Starscream plans a new attack.

S1·E21 Core

Honor

May 28, 2005 · 30 min

Leobreaker disobeys Optimus' direct orders and attacks Scourge. Although Scourge now respects Leobreaker, the incident has caused a rift between him and Optimus...

S1·E22 Core

Primal

Jun 4, 2005 · 30 min

Scourge and Optimus Prime battle each other for the Jungle Planet Cyber Key with Override from Speed Planet and Lori from earth being the guest viewers.

S1·E23 Core

Trust

Jun 11, 2005 · 30 min

In an attempt to confuse the Decepticons, Optimus makes duplicate cyber keys for each Autobot. Meanwhile Dr. Suzuki makes an amazing discovery at the North Pole.

S1·E24 Core

Trap

Jun 18, 2005 · 30 min

The secret history of Earth and Cybertron is revealed with the awakening of monster-hunting Autobot Smokescreen. Meanwhile the Autobots are drawn into a cavern filled with ancient

S1·E25 Core

Invasion

Jun 25, 2005 · 30 min

Starscream unleashes the ancient Decepticons in an attempt to find Earth's Cyber Planet Key, Optimus leads the Autobots in battle...

S1·E26 Core

Retreat

Jul 2, 2005 · 30 min

The Minicons rescue the kids from the military, while Sideways learns the location of the Autobots' Earth base and leads every Decepticon to Coby's home town...

S1·E27 Mytharc

Revelation

Jul 9, 2005 · 30 min

Scourge frees Megatron from Starscream's trap and heads toward Earth. The Autobots must deal with Megatron and locating Starscream's location at the same time.

S1·E28 Core

Critical

Jul 16, 2005 · 30 min

Just as all hope is lost, the light of Primus shines down on the fallen Autobot warriors (Scattershot, Red Alert, and Hot Shot) and resurrects them.

S1·E29 Core

Assault

Jul 23, 2005 · 30 min

A three-way battle unfolds between the Decepticons, the Autobots, and Starscream's forces. Then, an Autobot warrior named Wing Saber appears.

S1·E30 Core

Starscream

Jul 30, 2005 · 30 min

With the Autobots closing in, Starscream unleashes the Omega Lock's power and grows to a tremendous size. Meanwhile, the Cybertron Defense Team is sent to check on Cybertron, but t

S1·E31 Core

United

Aug 6, 2005 · 30 min

Override, EVAC, and Leobreaker are sent to help the Cybertron Defense team on Cybertron. Megatron's Decepticons follow as well as Thunderblast who joins Megatron. Optimus and Wing

S1·E32 Core

Cybertron

Aug 13, 2005 · 30 min

The Autobots are finally able to destroy Megatron. They then try to revive Cybertron using the Omega Lock, but it triggers a reaction that seemingly begins to tear apart the planet

S1·E33 Core

Balance

Aug 20, 2005 · 30 min

The true form of planet Cybertron is revealed as the planet sized transformer, Primus. Jolt is used as the device to connect and relay the messages of Primus, who begins to speak o

S1·E34 Core

Darkness

Aug 27, 2005 · 30 min

The Autobots search for Jolt and the kids who have been kidnapped by Sideways and Starscream, but Megatron has discovered new information regarding Unicron's dark power that could

S1·E35 Core

Memory

Sep 3, 2005 · 30 min

The kids are forced to use trickery to keep Sidewways and Starscream from deleting Jolt's memory, but the Autobots are getting closer with every minute.

S1·E36 Core

Escape

Sep 10, 2005 · 30 min

Jolt and the kids manage to get off a distress call, but Megatron refuses to let Optimus out of battle forcing Vector Prime to lead the rescue team with one big question: will they

S1·E37 Core

Family

Sep 17, 2005 · 30 min

In order to rescue his brother, Coby decides to go to Giant Planet. But before he leaves, he tries to tell his parents about the Transformers.

S1·E38 Core

Titans

Sep 24, 2005 · 30 min

Primus tries to use his spark energy to stop the black hole but Starscream interferes by throwing himself into Primus's spark energy, this causes him to grow to planet size. He the

S1·E39 Core

Warp

Oct 1, 2005 · 30 min

The Autobots travel to the Giant Planet on the old Atlantian ship Ogygia, but in the space bridge they must face off with the very mind of Atlantis itself.

S1·E40 Core

Giant

Oct 8, 2005 · 30 min

The Autobots must convience giant Transformers who are only interested in building new buildings to assist them in their search for the Cyber Planet Key.

S1·E41 Core

Fury

Oct 15, 2005 · 30 min

The Autobots begin the search for the missing Cyber Planet Key, but there about to have bigger problems on hand as Megatron is resurrected into the mighty Galvatron.

S1·E42 Core

City

Oct 22, 2005 · 30 min

Optimus and company rescue Bud and the Minicons, but Ransack and Crumplezone will do everything possible to prevent them from finding the Cyber Planet Key.

S1·E43 Core

Ambush

Oct 29, 2005 · 30 min

The Autobots divide into teams and journeys to the depths of Giant Planet. However, they face a difficult battle against an attack from a strange underground structure and Deceptic

S1·E44 Core

Challenge

Nov 5, 2005 · 30 min

The black hole expands even further and the crisis has approached Jungle Planet. Leobreaker and Snarl wager the leader's throne and challenge Scourge. Meanwhile Lori discovers an i

S1·E45 Core

Scourge

Nov 12, 2005 · 30 min

Although Scourge is the winner of the fight, Scourge's emotion causes him to hesitate. Among such, he encounters by chance Bud, who has formed the Mini-Con Recon Team. Meanwhile, t

S1·E46 Core

Optimus

Nov 19, 2005 · 30 min

The Autobots and Decepticons finally reach the lowest depths of Giant Planet. Coby and Landmine head to the spaceship Lemuria where the Planet Key is located. Meanwhile Galvatron a

S1·E47 Core

Showdown

Nov 26, 2005 · 30 min

Starscream and Galvatron battle for possession of the Omega Lock and the four Planet Keys. Though the Autobots try to intervene, Soundwave and Sideways get in their way and hope to

S1·E48 Core

Guardian

Dec 3, 2005 · 30 min

Wing Saber hurries to the space bridge in the sky. However, he was not there in time and the space bridge begins to fall apart due to the battle that had just occurred. Lori grieve

S1·E49 Core

Homecoming

Dec 10, 2005 · 30 min

Galvatron uses his might to pull Earth, the Speed Planet, and the Jungle Planet through space bridges forcing all Transformers to unite and fight against him.

S1·E50 Core

End

Dec 17, 2005 · 30 min

Optimus approaches Galvatron to take the Omega Lock and Planet Keys. However, Galvatron is drawing out the power of the Planet Keys, and Thundercracker, Thunderblast, Ransack, and

S1·E51 Mytharc

Unfinished

Dec 24, 2005 · 30 min

Galvatron who is worn out and without power wanders through the universe. At that time, something shining catches his eye. The voice of Starscream is heard and asks "Have You Given

S1·E52 Mytharc

Beginning

Dec 31, 2005 · 30 min

Representatives of each planet have successively gathered together on Cybertron. The first Space Peace Conference opens with Optimus Prime. Optimus Prime makes a proposal for the c

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