Lab Coat and Glasses: He always wears his lab coat sloppily and stands at the podium wearing glasses. Trademark: Characterized by his silver natural perm and listless, dead-fish eyes. Items/Accessories: In the original manga he has a cigarette in his mouth, but in the anime version he's often seen licking a lollipop (sweet candy) while saying, "Alright you lot, class is starting." Lack of Motivation: His aptitude and dignity as a teacher are near zero; he wastes class time with pointless, random chatter and private talk. Casual Guidance: He is the homeroom teacher of Class 3-Z of Gintama High, a gathering of problem children, but rather than seriously guiding the students, he's a presence who just goes with the flow of the chaotic class while providing the occasional retort. Unexpected Trust: Despite his irresponsible attitude, he sometimes (or sometimes doesn't) make remarks that hit the nail on the head in times of need, earning him a strange level of respect from the students. 27 years old.

Unlike the main Gintama series, he attends Gintama High as an ordinary high school student in Class 3-Z. As the strict vice-chairman of the Disciplinary Committee, he tries to maintain school rules but is often jerked around by the intense characters surrounding him. Hard-worker/Straight Man: He suffers because of the eccentric behavior of those around him and Ginpachi's irresponsible attitude as a teacher, constantly playing the role of the one who points out the absurdity. Severe Mayora: Just like in the original, he displays an abnormal diet here, pouring massive amounts of mayonnaise on every kind of food. Pitiful Positioning: He's a character whose hardships never end; the more seriously he tries to do things, the more they backfire, and he's often treated unfairly by his classmates.

Disciplinary Committee: He serves on the school's disciplinary committee, but he himself tends to slack off. Sadistic Personality: Behind his sweet face lies a dark heart; he enjoys ruthless sarcasm and pranks. Hostility toward Hijikata: He's always plotting to take Toshiro Hijikata down whenever he sees an opening. Class 3-Z.

Plain despite being on the Disciplinary Committee: A student who leads an inconspicuous and plain youth in Gintama High, where intense characters gather. Ill-fated Treatment: He carries the destiny of a plain character, such as trying to aim for the lead role in the anime or spin-offs only to fail. Elements common to the original: His plain and pitiful standing seen in the original 'Gintama' and his modest personality are depicted as-is in school life. Doesn't wear glasses, Class 3-Z.

Straight Man: In Class 3-Z, surrounded by intense characters, he's the hard-worker who constantly provides sharp retorts. Plain/Ordinary: He's such a plain existence that he often makes a joke of it himself, but he's also an indispensable figure as the class coordinator. Fan Club: His activities as the leader of the Terakado Tsuu Fan Club are still going strong, just like in the main story. Class 3-Z.

Coke-bottle Glasses: She wears characteristically thick prescription glasses. Red Jersey: She wears a red tracksuit during school life. International Student Setting: She is enrolled in Class 3-Z as an international student from China. Voracious Appetite: She carries a rice cooker around and eats rice anytime, anywhere. Childish Side: Her childish and innocent behavior stands out even more than in the main Gintama story. Class 3-Z.

Uniform Appearance: Unlike her kimono in the original, she wears the school's sailor uniform. Relationships: Although she is Shinpachi Shimura's biological older sister, she is depicted as a classmate in the same grade. Extreme Dual Personality: Usually, she exudes the atmosphere of a quiet and elegant beautiful girl, but she becomes extremely violent when she loses her temper. Overwhelming Violence: She possesses a ferocity that allows her to immediately inflict physical punishment on situations she doesn't like or annoying people around her (such as Isao Kondo). Cooking Skills: Just like in the original, she is a fatally bad cook, and the recurring gag of her creating the devastatingly powerful 'Dark Matter' is still alive and well. Class 3-Z.

He serves as the chairman of the Disciplinary Committee at Gintama High. He has Toshiro Hijikata and Sogo Okita under him. His appearance and treatment are basically that of a gorilla. He has an overwhelmingly strong love for Tae Shimura (Otae). He repeatedly engages in excessive stalking behavior. His actions have become one of the school's seven mysteries. As usual, he receives painful retaliation from Otae. Class 3-Z.

The math teacher at Gintama High. He has an extremely loud voice, and even in official introductions, it's said that 'he has no particular characteristics other than having a loud voice.' He's always bright and optimistic, laughing off serious situations with an 'Ahahaha.' He has a habit of misremembering people's names, such as calling Gintoki Sakata 'Kintoki.' There's a running gag where he suddenly vomits during class or conversation at the mention of ships or ship-related situations. He shows a reckless side that troubles Ginpachi, such as starting nonsensical talk or mysterious business negotiations even during class.

He wears a dark reddish shirt under his uniform. He wears an eyepatch over his left eye instead of a bandage. Since the founding of Gintama High, he has been feared as the most terrifying, wicked, and strongest delinquent. The leader of the delinquent group 'Kiheitai.' Contrary to the serious atmosphere of the original, he's often caught up in surreal and comical gags or comedy developments, such as choosing a sumo character in an arcade only to get pummeled. Class 3-Z.