Re: Who Is... Your Favorite Villain?
I am going to have to go with Black Paladin (Conquerors, Killers, and Crooks p. 126) He has the qualities to be a good leader for a team of Mystic Villians, without being overly powerful himself.
Also I find his backstory a good source for scenario ideas. The pathos of his own "lost love," the mythic ties to Camalot, and his anti-Christian beliefs. And, as a GM, I find Witchcraft's quote a good insiration for role-playing him.
"Maybe his evil grows, in part, from a frustrated desire to be better then the role circumstances cast him in."