In appearance, the Duke is a Masculine Celtor. He wears a Slate Aristocrat Coat over a black tuxedo vest, along with Eyeglasses. He also has a bell by his side that allows him to create and control Rock Golems, although it is never visibly used during the boss fight. The Duke of Erisia is a martial arts user and is specialized in the Legion Kata style. Alongside his martial attacks, he wields extremely powerful wind magic, also known as Galebreathe. The Duke is cunning, intelligent, and mature.