Domino is one of the high-ranking officers of Impel Down, as well as the most professional-seeming. She is a slim woman with long, wavy blonde hair, with a tuft always covering her right eye, the left being obscured by a pair of sunglasses. She wears a modified version of the militaristic style uniform of many of the staff, consisting of a short pale brown double-breasted jacket worn like a dress over a white shirt with a black tie, all paired with brown boots and gloves far longer than the ones worn by the other members of the staff. On her head, she wears a standard Impel Down hat.
Two years later, she does not wear the white shirt under the jacket anymore (showing something that appears to be bare chest skin, but no sigins of her cleavage since her tie is on top of her chest), has shorter hair, and appears to wear a white coat over her uniform.