Sakata Gintoki (坂田 銀時, Sakata Gintoki) is the main protagonist of the Gintama series. He is the founder and president of the Yorozuya Gin-Chan, as well as a highly skilled samurai, having fought in the Joui War in the past.
In his childhood days, Gintoki, as an orphan, was found by Yoshida Shouyou in a deserted battlefield. For a while, he, along with Katsura Kotarou and Takasugi Shinsuke, were taught by him before his teacher was arrested and his school burnt down. In order to rescue their teacher, the three students joined in the last years of the Joui War, and Gintoki became known as the Shiroyasha (lit. White Demon) for his powerful swordplay and demonic white appearance.
After the Joui War, as a result of a trade to save Ikeda Asaemon, Gintoki was arrested and was supposed to be beheaded. However, he was soon released by the 16th Ikeda Yaemon. Some time later, he met Otose while sitting behind her husband’s grave, where he made a promise with her late husband to protect her. Since then, he is a tenant in her house and founded the Old Yorozuya, and later, the current Yorozuya, consisting of Shimura Shinpachi, Kagura, Sadaharu and himself.