So check out these sexy female Joker costumes, including the new Suicide Squad, DC Superhero Girls, Batman Arkham City, and Arkham Asylum costumes! If you are not familiar with her reputation, she is known as one of Batman’s most notorious female nemesis who is also Joker’s sidekick. Flashback to the ’90s! I said, great. You know, wonder women costume we exchanged communication. And a Steampunk-inspired White Rabbit was also far from Wonderland.