Kenpachi Azashiro (アザ史郎 剣八, lit. Azashiro Kenpachi), formerly called Sōya Azashiro (アザ志郎宗谷, lit. Azashiro Sōya), is the former 8th Kenpachi of the Gotei 13 and the previous captain of the 11th Division. In order to gain the title of Kenpachi, he slew the previous one, Kenpachi Kuruyashiki, with his Bankai. He gained this title for unclear reasons. It's also known that he started a rebellion within the Soul Society and was taken down by the Royal Guard. Since then, he was sentenced to Mūken, the lowest prison level within the Soul Society and his title given to his lieutenant.