Sarugaki Hiyori - a Vizard, former lieutenant of the Twelfth Division of the Gotei 13 and former chief researcher of the Shinigami Research and Development Institute. She served under captains Kirio Hikifune and Kisuke Urahara, and after a forced hollowfication became one of the Vizards hiding in the human world. Despite her diminutive stature and childlike appearance, Hiyori possesses an explosive, aggressive personality and considerable combat power. She is a master of the sword and hand-to-hand combat, and her hollow mask grants access to Cero and a sharp enhancement of physical parameters. Her zanpakutō Kubikiri Orochi in shikai transforms into a huge serrated cleaver capable of cutting through a Gillian's mask with a single blow. Hiyori is infinitely devoted to her fellow Vizards, although outwardly she behaves rudely and constantly lashes out at Shinji Hirako, whom she uses as a punching bag and a living shield.