transfer Corben's consciousness into a robotic body made of an indestructible alloy called "metallo" and powered by Kryptonite in exchange for killing Superman. After the transfer is completed, Corben is horrified to discover his new body lacks human senses and goes insane. Realizing he is no longer human, he dubs himself "Metallo" and takes brutal pleasure in torturing Superman with his Kryptonite core before attacking Luthor after discovering Vale infected him with the disease. Corben is eventually defeated by Superman and left to wander the bottom of the ocean. Metallo also appears in the episodes "Action Figures", "Heavy Metal", and "Superman's Pal". Metallo returns in the Justice League two-part episode "Hereafter", voiced by Corey Burton. He joins the Superman Revenge Squad in an attempt to achieve their titular goal, but are defeated by the Justice League. Metallo returns in the Justice League Unlimited episode "Chaos at the Earth's Core", voiced again by Malcolm McDowell. As of this series, he has joined Gorilla Grodd's Secret Society. Metallo and Silver Banshee are sent to Skartaris to obtain a large Kryptonite rock, but are defeated by the Justice League. He attempts to tell them about the Society, but his brain is fried by a protocol that Grodd secretly programmed into him to prevent the Society's secrets from reaching the League. Metallo's body is taken to the Watchtower for J'onn Jonzz to probe what was left of his mind for information. Film Metallo appears in Superman/Batman: Public Enemies, voiced by John C. McGinley. This version serves as President Lex Luthor's bodyguard. After a failed meeting with Superman and Luthor, Metallo fights Superman and Batman before he is secretly killed by Major Force, who frames Superman for it. Metallo makes a cameo appearance in All-Star Superman as an inmate of Stryker's Island. Metallo appears in Justice League: Doom, voiced by Paul Blackthorne. This version is a member of Vandal Savage's Legion of Doom, is more lighthearted than his fellow Legionnaires, and possesses the ability to shapeshift. Despite mocking Savage's plan to destroy the Justice League, Metallo takes part in it anyway by disguising himself as a suicidal Daily Planet employee to lure in Superman and shoot him with a Kryptonite bullet, though the latter survives. When the Justice League storm the Hall of Doom, Metallo fights Superman once more, but is hit by a missile fired by Savage, which distracts Metallo long enough for Superman