DC Super Heroes Superman Year TPB Menace Of Metallo

"Superman is the target of Lex Luthor's deadliest scheme. The cruel genius has poisoned criminal John Corben. He withholds the antidote until Corben makes a promise: he will let Luthor turn him into a robot powered by Kryptonite. But once the creature named Metallo discovers that he is more machine than human, revenge fills his strange heart."