"Superheroes Juvenile fiction." . . "Superheroes." . . "Superman (Fictitious character)" . . "Stevens, Eric." . . "Superman (Fictitious character) Juvenile fiction." . . . . . "Electronic books"@en . . . "Superman is the target of Lex Luthor's deadliest scheme. The cruel genius has poisoned criminal John Corbin. He withholds the antidote until Corbin 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." . . . . . . "Science fiction comic books, strips, etc" . . . . . . "The menace of metallo"@en . "Juvenile works" . "Juvenile works"@en . . . "Fiction" . . "Fiction"@en . "Children's stories" . . . . "Superhero comic books, strips, etc" . "The menace of Metallo" . "Comic books, strips, etc" . . "The Menace of Metallo"@en .