Clark Luthor El-Kal

Ultraman is an evil version of Superman, living on another version of Earth. He is the leader of a motley crew of similar “reversed” super-heroes, the Crime Syndicate. Ultraman is an evil equivalent of Superman from a parallel Earth (called Earth-Three or Earth-3). He is a member of the Crime Syndicate, an evil version of the Justice League that terrorizes its Earth. His real name is Clark Luthor (according to Smallville), and is the adopted son of Lionel Luthor Earth-2.