Cheesewright is an unsuccessful student assassin of Viper House mentioned in Pyramids. He is first introduced when Chidder slams his head repeatedly against the wall for making fun of Arthur Ludorum saying his bedtime prayers and is described as having red hair and a face that is one large freckle.
Despite Chidder's prediction that he will pass, Arthur implies that he fails to pass the Assassin's Exam... and you only really get one chance at that. Chidder appreciates the tragedy of this: Cheesewright owed him fourpence.
He is only mentioned a few times, but appears to have radical ideas about girls who paint their toenails.