Metallo

Metallo (John Corben) is a comic book supervillain and cyborg who appears in Superman stories published by DC Comics. Metallo's trademark is his kryptonite power source, which he often uses as a weapon against Superman. His traditional identity is John Corben. The character first appeared in Action Comics #252 (May 1959). In 2009, Metallo was ranked as IGN's 52nd Greatest Comic Book Villain of All Time. The Golden Age Superman battled an unnamed scientist calling himself "Metalo" (note the alternate spelling) who wore a powered suit of steel armor in a story titled "Man of Steel Versus Man of Metal". Years later, Superman encountered the villain a second time in a story with the same title. Metalo, his real name now revealed as George...