Sebastian typically dresses in a butler's outfit, which consists of black trousers, a six-buttoned double-breasted tailcoat, and a gray vest on is his shirt cuffs and tie is the Phantomhive crest. The back of his left hand contains the mark of his Faustian contract with Ciel Phantomhive. Sebastian takes on the appearance of a tall, handsome adult with black hair, red eyes, pale skin, and black fingernails.