Cy-Kill in the animated series
|Japanese name||Bike Robo|
|English voice actor||Bernard Erhard|
In Challenge of the Gobots, Cy-Kill was the leader of the evil Renegades. He was originally a member of the Guardians and friend of Leader-1. He wanted to be the sole ruler of Gobotron to better protect it (since he felt he was the mightiest guardian), but Leader-1 believed in democracy. This led Cy-Kill to break away from the Guardians and become the leader of the Renegades. He sought to conquer the Gobot homeworld and have all the power for himself. He was very ruthless and a thorn in the side of the Guardians.
Cy-Kill attempted to invade Earth with the help of crooked Unicom scientist Doctor Braxis, but his plans were thwarted by the Guardians. The Guardians were able to eventually capture him. Unfortunately he used his wheels against the guards to aid his escape (since his weapons were disconnected), causing the release of his lieutenant Fitor (also a former Guardian). Because of Fitor's aid, Cy-Kill was able to escape to his massive mobile base, Roguestar, and threaten Gobotron once again. Although an attempted coup by the Master Renegade allowed the Guardians to assemble the Power Warrior Courageous and save both Earth and Gobotron, Cy-Kill would remain at large, threatening both planets.
In "It's The Thought That Counts" episode #6 the Guardians set up a lab to test their power suits on Earth. With Defendor and Blaster patrolling the lab Baron Von Joy and Path Finder tested a new suit on Dozer. Cy-Kill captured and tried to brainwash Scooter, making him sabotage the lab and self destructing. Rest-Q check out Scooter, but Scooter refused to be examined. Eventually Scooter was freed from Renegade control. Cy-Kill, Cop-Tur, Crasher, Geeper-Creeper, Pincher, and Snoop attacked the lab, but it was defended by Leader-1, Baron Von Joy, Blaster, Dozer, Dumper, Road Ranger, Scooter, Scratch and Turbo. Although the Guardians were winning the battle, an accidental backfire from Baron Von Joy's weapon allowed the Renegades to escape.
In "Doppleganger" episode #23 Cy-Kill, Cop-Tur, Crasher and Snoop attacked Leader-1, Turbo, Scooter and Small Foot. Crasher wounded Small Foot. After attaining recordings of the Guardians the Renegades retreated. Using the recordings Cy-Kill had Herr Fiend program robot duplicates of the Guardians. When demonstrating the Space Bender weapon to Unicom, Leader-1 learned that the Renegades were attacking Washington. The Renegades ambushed Leader-1 and replaced him with his duplicate. Leading the Command Center back to Gobotron and getting rid of Scooter and Small Foot the Renegades then released duplicates of Path Finder, Rest-Q, Van Guard and Turbo. Small Foot and Scooter were able to capture the Turbo duplicate and learn where their friends were being held. Cy-Kill then replaced Good Knight. Using the duplicate Turbo the Guardians infiltrated the Renegade base, freed the captured Guardians and escape from Spoons and Fitor. Although blocked by the Renegades, Scooter used a hologram of Zod to make the Renegades flee. Making it back to Gobotron the Guardians were attacked by the Guardian duplicates. The real Guardians were able to defeat their duplicates with the aid of the real Zeemon, Hans-Cuff and Rest-Q. Cy-Kill then arrived in Thrustor with more duplicates, but Small Foot was able to stop with robots using the Space Bender, which would fuse their robot brains.
Cy-Kill appeared in GoBots: Battle of the Rock Lords.
In the Eagle comic strip Robo Machines, Cy-Kill was a petty criminal on Robotron, already known to the Security Forces, before submitting himself to Stron-Domez' Robo Machine process, which added a transformation mechanism to his cybernetic body. While the initial attempt to assassinate the planet's president failed, Cy-Kill at least aided Stron-Domez' escape. He was modified on arrival on Earth, given a new fission cannon weapon by Stron-Domez. However, he held feelings of contempt for fellow Robo Machine Tank, and these bubbled over during their attack on Cholkham, when Cy-Kill was tricked into fighting his Renegade comrade. When the Security Forces tracked the Renegades to their Birmingham factory, Cy-Kill was the only Robo Machine to escape, carrying Stron-Domez to safety. He then performed an operation on his master to convert him into Zod.
Cy-Kill then coerced a variety of human tramps and vagrants to work in Zod's new factory, situated on the outskirts of London. However, he began to dislike Zod after the monster stole the pleasure of killing the SF Robo Machine Carry-All from him. Cy-Kill also grew more ambitious, and modified the brain of the Devil Invader Casmodon so it would obey him over Zod. He was briefly disabled by Leader One at the scrapyard. He showed his contempt for Zod by abandoning his damaged ersatz creator in the scrapyard, intending to observe and support Casmodon's attack on London. However, he was detained fighting the SF robot Scooter outside the city. Scooter, with the aid of human Charlie Brampton, managed to trick him into being hit by a train, delaying him while Casmodon was defeated. He attempted to shoo them down once he extricated himself, but was driven off by Leader One. Frustrated at the Devil Invader's damage, he set off after the remaining SF forces by himself, and his attack was enough to cause the depleted Guardians to withdraw from Earth. At the end of the series, Cy-Kill was left on Earth, seemingly with Casmodon at his disposal.
- Gobots Cy-Kill (1983)
- The toy of Cy-Kill was originally Bandai's Bike Robo from their Machine Robo toyline. Bike Robo was a heroic character in red, white, and blue colors. Tonka, however, decided to make this character a villain. 
- Gobots Cy-Kill Redeco
- The Tonka version was originally released in the red, white, and blue, but in the final year of the toy line this was changed to a more "evil" black and green color scheme. The animated version, however, had already been drawn in the original colors and so he stayed that way on TV.
- Gobots Super Cy-Kill
- A larger "Super GoBot" Cy-Kill was later released, based on the Bandai Big Bike Robo figure. As one of the lead characters from the TV series, Cy-Kill featured on numerous items of merchandise as well.
- Gobots Model Cy-Kill
- Monogram Models released Gobots model kits  which actually converted, and contained a Cy-Kill model among 7 others. This toy was a redeco of a Cyclone motorcycle from the Mospeada anime.
- Form-convertible toy robot - Google Patent link containing sketches of Cy-Kill