A small, neat, precise man assigned by Lord Vetinari to accompany Vimes as his clerk on the diplomatic mission to Uberwald. He has a nervous verbal tic of saying 'mhm-mhm' and presents himself as a harmless bureaucrat. He is in fact a trained Assassin, skilled in multiple forms of combat and espionage, sent to handle the more delicate aspects of the mission that a straightforward policeman like Vimes might not manage.