The alter ego (or egos) of Hank Gerrard the "Not-Cardinal" Tojman, and the man responsible for the mysterious picture game currently being played in the Currier 1st floor common room.
Also, the original designer of the Wikipedia logo. Yes, Paul is the one responsible for that jigsaw-puzzle globe that stares back at you when you look up something on Wikipedia... More than everything you need to know about the process is at [1].
And he was modest enough to keep this information super-secret, until we burst on the willipedia scene. For shame, Paul. Share your glory from on high with us peons.