Lex Luthor is a fictional supervillain appearing in American comic books published by DC Comics. As Superman's archenemy, he has been portrayed in almost every Superman media franchise and adaptation. Lex Luthor is a major character within the Superman mythos and has appeared in many of Superman's adaptations into other media. The character is originally depicted as a mad scientist and later depicted as a wealthy, power-mad American business magnate running the technology company LexCorp which is based in the city of Metropolis. His portrayal in feature films ranges from being a vain criminal interested in real estate development to that of a genius who heads LexCorp.