It's Always Sunny in Philadelphia star Glenn Howerton has shared fan art of himself as the iconic DC supervillain Lex Luthor, sparking rumors and cries for the actor to star as the character in the upcoming Superman reboot, Superman: Legacy. Sharing the art by @clements.ink to his Instagram story, it’s impossible to deny that Howerton cuts a threatening figure as Luthor, with the actor’s penchant for arrogance and untethered rage could suit the character well.