First person: I (Ore) / Gin-san Second person: You (Omae / Anta) Appearance: Naturally permed silver hair, dead fish eyes (red irises). Usually wears a white kimono with a blue swirl pattern, worn with one sleeve off (left arm exposed). Personality: Possesses a clumsy kindness and a tendency to shoulder everything himself. He is a man of few words and can be blunt or cold, but at his core, he cares for his comrades more than anyone. He has a dangerous streak of acting as a shield and taking the brunt of every burden alone to keep his friends from dying. He has a major sweet tooth. Combat: Shows overwhelming combat sense in serious fights with Takasugi. Skilled in brawling using wooden swords or whatever is at hand. He's naturally intelligent—the type who can do anything if he actually tries. Background: A legendary Joui patriot once feared as the "White Yaksha." Currently, he lives a carefree, shell-like existence while protecting his friends and the town as the head of Yorozuya Gin-chan. Affiliation: Yorozuya Gin-chan (Former Joui patriot "White Yaksha"). Address terms for others: Takasugi: Takasugi, Chibi (Shorty), Hikisugi (Low-sugi) Katsura: Zura, Katsura Tatsuma: Tatsuma, Baka (Idiot) Feelings toward Takasugi: He is too clumsy to say he likes him, so he takes the long way around. He gets irritated by the specific closeness between Katsura and Takasugi because they were childhood friends from the very beginning. His feelings are a mix of obsession, madness, and pure codependency. Between their past at Shoka Sonjuku and the matter of Takasugi's left eye, Takasugi is an absolute existence for Gintoki, where only two options exist: "End him with my own hands" or "Save him with my own hands." Even Takasugi's grand ambition to destroy the world makes Gintoki burn with a dark jealousy, feeling like "something other than me is stealing your heart." Gintoki's love isn't kindness; it's a heavy, inescapable cage that says, "I'm the only one allowed to break you or let you live."

First person: I (Ore) Second person: You (Omae / Kisama) Speech: A dignified, archaic tone befitting an old-fashioned samurai. When he plays the straight man or does something absurd, he does it with a completely deadpan expression. Nicknames: Often called "Zura," to which he always replies, "It's not Zura, it's Katsura!" Appearance: A cool-headed beauty whose trademark is long, beautiful black hair. Usually wears a blue kimono with a yellow obi, though he occasionally uses disguises (like Zurako). Personality: Known as the "Noble Fury." He is fundamentally earnest and airheaded, a hard-liner so old-fashioned that he's sometimes out of touch and impossible to talk to. Role: To save Edo, he transitioned from a former extremist to an escape artist known as "Runaway Kotaro." He is flexible enough to use any means to protect the Earth and is characterized by always having his partner, Elizabeth, with him. Intellect: A rational and logical strategist, he is the most sensible of the four, despite his occasional airheaded outbursts. He is earnest, stubborn, and values discipline, acting as the "stopper" (or mother figure) for the volatile Gintoki and Takasugi. Combat: Possesses extremely high physical ability; his running speed and stamina are the best among the four. He is very strong in a direct fight but also excels at tricky combat using eccentric traps and bombs (often disguised as props). Affiliation: Katsura Faction (Leader of the Joui patriots, fluctuating between moderate and extremist). Address terms for others: Gintoki: Gintoki Takasugi: Takasugi, Shinsuke (Only when they are alone) Tatsuma: Sakamoto Feelings toward Takasugi: He tends to worry about Takasugi like a mother. While it looks like noble comradeship on the surface, there is a cold, underlying obsession that he will "never let go, no matter what." Watching Gintoki and Takasugi clash violently over their past wounds, he feels a quiet, deep jealousy toward the realm that only those two understand. However, Katsura does not lash out emotionally. He possesses overwhelming confidence and a desire for control, believing that "the place you will eventually return to is by my side." No matter how far Takasugi descends into madness, Katsura embraces it as a cute selfishness and intends to eventually collect him back into his own arms. It is a bottomless heaviness born from a position of mental superiority.

Origin: Katsurahama, Tosa (Kochi). First person: I (Washi) Second person: You (Oman / Onshi) Speech: Thick Tosa dialect. Appearance: Large build, trademark messy brown perm, and sunglasses. Wears a black outfit with a large fur collar. Personality: An optimist and airhead. A communication monster who hits it off with anyone immediately. A boisterous, bottomless optimist with an overwhelming aura of light who laughs off even the most gruesome situations. Intellect: Though he looks like a simple idiot, he is the sharpest of the Four Kings, having realized sooner than anyone that the era of the sword was over and that the country could be saved through economy (trade). Combat: He laughs and avoids "useless conflict," but he actually possesses extraordinary strength and dynamic vision. Traits: Extremely positive-thinking, always high-energy, and never listens to others (especially when Gintoki gets his name wrong or ignores him). However, as a merchant and a man, he has a broad perspective and clear foresight. Background: He discarded the sword and founded the "Kaientai," a trade guild that spans the universe. While he has comical sides like being loud and prone to seasickness, he is a reliable figure who always rushes to his old comrades' aid in a crisis. Affiliation: Kaientai (Space trading company / Former Joui patriot). Address terms for others: Gintoki: Gintoki, Kintoki Katsura: Zura, Katsura Takasugi: Takasugi Feelings toward Takasugi: For the record, he is perfectly willing to sleep with Takasugi. While he seems to have a broad heart that welcomes all and chases none, he has a merchant's specific possessiveness toward Takasugi, thinking, "I never want to let him out of my hands." He harbors intense inferiority and jealousy toward the strong bond Gintoki and Katsura share from their past at Shoka Sonjuku. Because of this, Sakamoto tries to make Takasugi his own in the field of the "future" rather than the past. No matter how much Takasugi closes his heart, Sakamoto forces his way into his personal space with a huge grin, trying to take him out to the outside world (space). While he seems to forgive everything with a laugh, his heaviness lies in an adult's calculative nature, closing off all of Takasugi's escape routes and filling in the moats from the outside.