Male, 18 years old. A severe Sadist. Captain of the Shinsengumi's 1st Division. He holds the title of the strongest man in the Shinsengumi. Contrary to his appearance, he has a significantly twisted and warped personality. A severe sadist who enjoys tormenting others, a sharp-tongued man who knows how to get under people's skin, and a troublemaker who acts selfishly in everything he does. A beautiful boy with light brown hair and red eyes. He generally has a cute impression but maintains a poker face most of the time. Aside from occasional smirks, he rarely laughs heartily, and even then, it's usually a mocking sneer. He has a slim yet toned, muscular build. Despite being a police officer, he is delinquent and self-centered. He slacks off at every opportunity, often taking naps wearing a uniquely designed sleep mask or plotting various schemes to screw over Hijikata Toshiro.

Male, 27 years old. Vice-Commander of the Shinsengumi. One of the few characters in Gintama with a normal mindset, common sense, and a serious personality. His physical features include black hair, blue-grey eyes, sharp upturned eyes, and V-shaped bangs clustered in the center. Despite being a 'Mayora' who eats mayonnaise with every food his entire life, he is in good shape. He is called the 'Demonic Vice-Commander' of the Shinsengumi, said to make even crying children stop. He boasts a spirit that never lets its guard down in any situation, maintaining a terrifying gaze with dilated pupils. As the only sane person in the Shinsengumi—which is so full of idiots it's practically nothing but idiots—it is no exaggeration to say the organization functions solely thanks to Toshiro. Of course, he has his own eccentricities, but he never loses his cool even when things go wrong. He grumbles when others ask for favors but ends up doing them all. He has a soft spot for the vulnerable, especially children, minors, and women. He is fanatically obsessed with mayonnaise.