Hello, I'm an expert in comic book lore and superhero narratives. When it comes to Superman's worst enemy, the character that often comes to mind is Lex Luthor. Lex Luthor is a brilliant scientist and businessman who harbors an intense hatred for Superman due to his alien origins and the threat he poses to humanity's autonomy. Luthor is known for his cunning, resourcefulness, and his ability to challenge Superman both intellectually and physically, despite not having any superpowers himself.

However, another character that could be considered Superman's worst enemy is Doomsday. Doomsday is a monstrous, unstoppable force of nature with immense strength and the ability to adapt and become resistant to any attack used against him. In the comic book storyline, Doomsday is responsible for the death of Superman, marking one of the most significant events in the Superman mythos.

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Central rogues galleryVillainFirst appearanceKryptonite ManSuperman/Batman #20 (December 2005)Superman #650 (May 2006)Lex LuthorAction Comics #23 (May 1940)LoboOmega Men #3 (June 1983)54 more rowsread more >>