Yes, the Absorbing Man! Any night power used against me failed and was absorbed by me to be used when I wish. It was so awesome! I lost though, despite being invincible. The baddies just kicked our asses and then mocked me personally.
Ok, here's the idea: as players sign up, they (and I) put forth and develop roles on the fly, together. By the time the game is ready to go, we'll have a variety of roles that have been slapped together and I'll randomize them and push Play.