Even if you're not into video games, you probably know Mario, Nintendo's ever-present mascot. (Full name: Mario Mario. Huh?)
Unless you're into video games, you probably don't know Wario. He's bizarro Mario.
Mario is good, Wario is evil. Mario's logo is an M, Wario's is an upside-down M... a W. (Get it? "W"ario!) Mario wears red, Wario wears yellow. Mario gets power from mushrooms, Wario from garlic. Mario's mustache is curly, Wario's is edgy. (Clearly, the designers have put in a lot of thought into this.)
Mario is Italian, which, if you play the percentages, should make him Catholic.
What does that make Wario?
Protestant. Duh.