He is the eldest of three brothers of the Zaku Clan who serve Zakuto. He is cunning and will use any means to win, but he is careless and is always getting burned by the Five Mushas. He wears a helmet ornament with a hawk as a symbol of his speed. His favorite weapon is the famous sword, Kogetsu. He also uses various weapons such as bazookas and spears depending on the battle situation. He is skilled in the watermelon-smashing killing technique, in which he blindfolds his enemies and captures them with his mind's eye, but it is said that no one has ever seen him succeed in it.