The most influential people that never lived.

A friend of mine ran a roleplaying game based loosely on the Riverworld series of stories. That was a place where you could meet all kinds of people from all times and places.

So he asked us to give him a list of characters that we might meet and/or get to play in his game. There were some interesting choices. We didn't play very long, but one of us got one of his choices to play: O.J. Simpson. This was long before the incident, so he was just a big buff athlete with heavy plastic armor. Anyway, I remember that my list had Daffy Duck, Tarzan, and Batman, since he didn't limit us to actual real folks.

Here's a list of the "most influential people who never lived." Some of the choices are interesting, and the ranking is questionable. Who would you play in a roleplaying game like that?