Alter ego: John Corben
Affiliations: Superman Revenge Squad and the Legion of Doom
For prior character development, refer to Metallo’s bio in the Superman: TAS's character guide.
Bio: Metallo rounded up a group of villains who had some sort of personal grudge on Superman and sought vengeance against the Man of Steel. The off-screen name of the group was Superman Revenge Squad and it was composed by Toyman, Livewire, Weather Wizard and Kalibak. Metallo was its leader and they ran amok on Metropolis so as to call Superman’s attention and ambush him. The League intervened, and before Superman showed up, Metallo was effectively thwarted by the Flash and Wonder Woman.
Metallo later reappeared as a member of Grodd’s Legion of Doom. He went to Skartaris together with Silver Banshee to steal a giant rock of Kryptonite. There, they served as Demos’s military advisors and financed his battle for the stone. When Demos invaded the monastery that held the chunk, he called for Metallo. When he was about to get his hands on the rock, Supergirl stepped in. He flashed her with his Kryptonite cell. She was weakened, but mustered enough strength to strike him with Stargirl’s staff, ripping his left arm off. Metallo went after a fleeing Supergirl and when he finally trapped her, she ripped his battery out of his body, leaving him paralyzed. He was then questioned by the Green Lantern but was refused to talk. When he realized that without his Kryptonite cell, he would run out of energy, Metallo finally yielded. However, right before he could spill everything about the Legion, something or someone short-circuited his brain, leaning him apparently dead. The Leaguers took Metallo to the Watch Tower to see if J’onn could probe what was left of Metallo’s mind. His fate was left unknown.