The 2000s started with the crossover Tale "Emperor Joker", through which the Joker steals Mister Mxyzptlk's fact-altering electric power and remakes the universe in his image (torturing and killing Batman daily, before resurrecting him). Once the supervillain then attempts to destroy the universe, his reluctance to get rid of https://thefairlist.com/story10783216/little-known-facts-about-joker