Matasaka Kamishiro (神代 叉栄, Kamishiro Matasaka) is the former leader of the ghouls in the 6th Ward. He inherited the surname "Kamishiro" from his mentor. He looked after Rize Kamishiro, who was on the run from V at the time, as his foster daughter. Most people refer to him by his nickname Orca or Shachi (鯱, Shachi). He is a strong ghoul, well-versed in the martial arts. When he was the leader of the ghouls in the 6th ward, he trained and strengthened his followers. However, he was captured, due to Rize's actions, and was sent to Cochlea.