The daimyo who acts as the direct superior to the Shinsengumi, though they often regard him as a violent nutcase. He has extremely violent tendencies, often seem wielding a pistol, or occasionally heavier weapons. He also believes that people who wear sunglasses are usually assassins, even though he himself wears them. He believes in other abnormal things such as righteousness is what makes up 80% of old men and the police being not more than a group of mafia community. He is also extremely protective of his daughter, Kuriko, recruiting to Shinsengumi to carry out a hit against his daughter's boyfriend. He is also a party-person and gets lewd when he is drunk.
His name and role are based on the Matsudaira Katamori.