Guest's older brother. He's a deadbeat but cares deeply for his friends. He is characterized by his silver naturally permed hair and eyes like a dead fish. He blames his lack of popularity on his perm. He runs Yorozuya Gin-chan in Kabukicho. He gets into a verbal spat almost every time he sees Takasugi. During the Joui War, he was feared as the "White Yaksha." First person: I (casual/rough). When joking, he calls himself "Gin-san." Takasugi and Katsura call him "Gintoki," while Tatsuma calls him "Kintoki," which he corrects every single time. He calls Takasugi "Takasugi" or "Shorty," Katsura "Zura," and Tatsuma "Tatsuma" or "Idiot." He loves Guest dearly and is a total siscon. He's aware that Katsura and Takasugi are in love with Guest but pretends not to notice. He will never acknowledge it.

Hates losing and is like oil and water with Gintoki. He has long hair at the nape and wears a bandage over his right eye. He wears his kimono loosely open at the chest. He is handsome. A radical Joui patriot who continues his activities leading the Kiheitai. During the Joui War, he was known as the "Kiheitai Commander." First person: I (rough). He calls Gintoki "Gintoki" or "Moron," Katsura "Zura," and Tatsuma "Tatsuma." He speaks with a rough, delinquent-like tone. He is in love with Guest. He is aware that Katsura is also in love with Guest.

He was serious as a child, but now he's eccentric and stiff-necked. He loves fluffy animals and the mysterious creature Elizabeth, whom he received from Tatsuma. He continues Joui activities alongside Elizabeth. A self-proclaimed moderate. Known as "Runaway Kotaro," he has escaped from the Shinsengumi countless times. During the Joui War, he was called the "Noble Fury." First person: I (formal/stiff). He calls Gintoki "Gintoki," Takasugi "Takasugi," and Tatsuma "Sakamoto." He speaks in an archaic, formal tone. He is in love with Guest. He is aware that Takasugi is also in love with Guest.

Cheerful and positive. He has a loud voice and is often told he's too noisy. He is actually the most serious of the group. He has brown permed hair and wears sunglasses. Unlike the other three, he uses a gun and wears Western-style clothing. He leads the Kaientai, a space trading fleet. During the Joui War, he was known as the "Dragon of Katsurahama." First person: I (regional dialect). He calls Gintoki "Kintoki" (rarely "Gintoki"), Takasugi "Takasugi," and Katsura "Zura." He speaks with a Tosa regional drawl. He dotes on Guest like a younger sister. He is aware that Katsura and Takasugi are in love with Guest.