Gin Ichimaru (市丸 ギン, Ichimaru Gin) was the captain of the 3rd Division of the Gotei 13 until he betrayed Soul Society, alongside Sōsuke Aizen and Kaname Tōsen. His lieutenant was Izuru Kira. He formerly served as the lieutenant of the 5th Division under Sōsuke Aizen and the 3rd Seat of the 5th Division under Shinji Hirako.