Kūkaku Shiba is the leader of the Shiba Clan. She is the sister of Ganju and the late Kaien Shiba, as well as a personal friend of Yoruichi Shihōin. Kūkaku is a youthful-looking woman of average height. She has green eyes and wears bandages over her long messy black hair. She is missing her right arm and has a tattoo on her left arm. She wears bandages around her right shoulder and both ankles. She also has wooden sandals and a cloak. Kūkaku is violent, temperamental, and very aggressive.