Medium Dave Lilywhite
One of the very competent, slightly thuggish individuals hired by Mr Teatime in Hogfather to help him reach, enter and desecrate the Tower of Teeth. Turned out he was very competent at dying in his own head as he is effectively destroyed by his own imagination. When spare belief from the "death" of the Hogfather is waiting for an opportunity to escape, it does in the form of his mother, who kills him.
By the hardly educated standards of Ankh-Morpork's society of the differently legal, he was considered an intellectual. This largely had to do with have proper spelling for his tattoos. He is concerned for his less intelligent brother, Banjo, after the death of their mother, Ma Lilywhite.