Feyd Rauthan is a Knight of the Iscariot Order, and is one of Cardinal Richelieu's top lieutenants. Richelieu might need to play nice, but the tiefling is under no such obligations -- he has a reputation for fanaticism and the ruthless pursuit of "justice." When Inquisitor Rauthan goes looking for heretics, he finds heretics -- they all leave confessions after he's done with them, after all. Curious, that.