Superman
His most well known arch enemy is a bald (hairless), evil genius named Lex Luthor. He has other deadly enemies too. Bizarro is a failed duplicate of Superman. Darkseid is a very powerful enemy, and the ruler of the planet Apokolips. Doomsday is regarded as the first villain to kill Superman in physical combat, but he is later revived. Another enemy includes General Zod who comes from the same planet as Superman.