If I had to do a bad guy showdown I would have the Joker, Loki, Voldemort, and Deadpool. People say that Deadpool is not a villain but I believe he will do anything that benefits him and if he has the chance to become king of the villains. He would totally do it. But in the first round Loki and Voldemort would fight and Loki would kick Voldemort butt. Then The Joker would face deadpool and the joker would win because he is smarter than Deadpool. Then in the final battle the Joker shoves a pencil through Loki's eye and wins the title of /king of all villains.