* AwesomeEgo: Luthor is at his most entertaining 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,]] Creator/MichaelRosenbaum.
* 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 ''WesternAnimation/SupermanDoomsday'' he mentioned how much he admired him. Franchise/WonderWoman [[ComicBook/BlackestNight once made him admit]] that he wanted to ''be'' him. They also once had [[ComicBook/{{Superboy}} a son]].
** 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. AndThatsTerrible.[[/note]]
** "[[VideoGame/{{Superman 64}} If you want to save your friends, solve my maze]]!"
*** ''[[GameOver Lex Wins]].'' '''*EvilLaugh*'''
** '''[[Film/SupermanReturns WROOOOOOOONG!]]'''
* RootingForTheEmpire: Can happen due to the nature of the conflict between an unpowered human and a demigod.