A young Assassin of the Ankh-Morpork Guild, brilliant, creative and utterly without empathy. He has one normal eye and one glass eye with a pinpoint pupil, and insists his name is pronounced 'Teh-ah-tim-eh'. He views other people as objects and approaches murder with the inventive enthusiasm of an artist. He lost both parents at an early age in circumstances the Guild chose not to investigate too closely.