The martial arts master of M1, M2, and M3. For years, Mitamura had been training young boys throughout their lives in the ways of martial arts, though one day Dr. Ichigaki poisoned him in secrecy. His disciples, gravely upset, were willing to do anything for his health, and Dr. Ichigaki took three of his students, En, Ryo, and Kai, and turned them into killing machines at his command. Kurama, finding this out through one of Dr. Ichigaki's henchmen, healed Mitamura. Although the three felt their master should not see them for the crimes they committed, Genkai explained that she had given them the choice to be purified or not, and Mitamura easily forgave them.