* AwesomeEgo: Luthor is at his best when he's bragging about how great he is.
* CantUnhearIt: Chances are that Creator/ClancyBrown's voice is the one you'll hear in your head when reading his lines.
* DracoInLeatherPants: [[Series/{{Smallville}} Thank you, Michael Rosenbaum.]]
* FashionVictimVillain: ... A purple and green jumpsuit. [[PunctuatedForEmphasis Purple. And. Green.]] What was he ''thinking'' in the 1970's?
* FoeYay: His relationship with Superman is complicated. There was that time in the beginning of "SupermanDoomsday" he mentioned how much he admired him. Franchise/WonderWoman [[ComicBook/BlackestNight once made him admit]] that he wanted to ''be'' him. They also have a [[ComicBook/{{Superboy}} kid]].
** To say nothing of his sexual relationship with one of the {{Comicbook/Supergirl}}s in the 90's.
* MagnificentBastard: The premier MB at DC, always coming out on top of the competition.
* MemeticMutation: Once, when no one was looking, he stole '''forty''' cakes. [[note]]That's as many as four tens.[[/note]] [[AndThatsTerrible And it was terrible.]]
** "[[VideoGame/{{Superman 64}} If you want to save your friends, solve my maze]]!"
** ''[[VideoGame/{{Superman 64}} Lex Wins]].'' '''*[[GameOver evil]] [[EvilLaugh laugh]]*'''
** '''[[Film/SupermanReturns WROOOOOOOONG!!!!]]'''
* RootingForTheEmpire: Can happen due to the nature of the conflict between an unpowered human and an alien god.
* StrawmanHasAPoint: Luthor's fear of aliens certainly isn't groundless, given the existence of the likes of Zod, Brainiac, and Mongul.