Hattori Hanzou (服部 半蔵 Hattori Hanzō?) is a character introduced in Toaru Majutsu no Index. A ninja from the pure line of the Hattori clan, he hid his status and went to Academy City. Initially a member of Komaba Ritoku's Skill-Out, he becomes its leader after the death of Ritoku and the abdication of Hamazura Shiage.