Chosen by Ogen to demonstrate the Iga's skills for Ieyasu, Yashamaru accompanied his clan's leader to Sunpu and was later charged to deliver to the Iga their copy of the battle scroll. After realizing it was lost, he is tricked by Saemon (voicing Tenzen) and then taken off guard by Gyoubu, who snaps his neck. Despite his quick death, Yashamaru is easily one of Iga's strongest fighters. He was able to fight on par with Shougen, who was able to hold his own fairly well against four Iga ninjas alone. Yashamaru was even able to gain the upper hand on Kisaragi Saemon before being killed by Gyoubu.