10 Sickest "Jokes" The Joker Ever Pulled
3. Broke Superman - Injustice: Gods Among Us
Oh, that Joker. Always such a prankster. The Joker's greatest bait-and-switch involved not Batman but Superman, and not the DC Universe proper, but the alternate one as posited in Injustice: Gods Among Us. It was here that the Joker infected Superman with his latest psychedelic agent - causing the Man of Steel to hallucinate that he was being attacked by Doomsday.
Sike! Not Doomsday after all, but the love of Superman's life, pregnant with their child. Superman only discovered this after he'd already killed poor Lois and his unborn child; flying her all the way out into space and everything.
Needless to say, Superman couldn't take the joke, and immediately murdered the Joker, tearing out his heart in front of a horrified audience. This in turn set into motion the rise of Superman: Super Dictator, setting up the events of the beat 'em up Injustice and its many, many tie-in comics.