I need suggestions from you (Patreon)

I'm going to a costume event called  Skurke & Helte-Fest 2019 (Villains & Heroes Party) in September and I don't know what to make for it xD It has to be some sort of hero or villain and I want to make something that most people know or recognize in some way, and I have 6 weeks to make it. I've thought about a Creeper or Bowser, but what else would you suggest?