Sister Bismaru is a crazy nun from the future Edo. She is the descendant of Ebisumaru and resembles him. Her first appearance was in Ganbare Goemon 3: Shishi Jûroku Hyôe no Karakuri Manji Katame!. In that game, she kidnaps the Wise Old Man while he's in the future. In her 2nd (and last) appearance, Goemon's Great Adventure, she steals the Wise Old Man's super gorgeous ghost machine to revive Dochuki, Boss of the Underworld, marry him, and take over the world.