In episode 6 of season 5 called “Less Than Hero” Fry and Leela apply a cream to their sores. Logically this cream gives them super powers. To fight crime in New New York, they adopt alter egos and Leela becomes Clobberella. Bender joins the team and modestly names himself Super King and he has no actual super powers. This one also makes for an easy Halloween costume!

Here’s the link to the product as a sticker, but you can view the design on multiple items if you’re interested.