Hijikata Toushirou

Hijikata Toushirou is a character from Gintama "If there's something still binding your hearts, I'm sure that's... the most important thing a Shinsengumi can have. Believe in that, and fight. Whatever that path may be."Hijikata Toushirou  ==History== Hijikata Toushirou ( 土方 十四郎 Hijikata Tōshirō ) is the former Vice-Commander of the Shinsengumi. Introduced as the brains of the Shinsengumi, he is commonly known as the Demonic Vice-Commander (鬼の副長, Oni no Fukucho), striking fear into his enemies and subordinates (with the exceptions of Kondou Isao and Okita Sougo).

He had a split personality named Tosshi ( 十四 Tōshi ), a soul otaku, created from an cursed sword he bought. This incarnation first appeared during the Shinsengumi Crisis Arc and lastly in the Terakado Tsuu's Fan Club Voting Competition Arc, where this personality dies by sacrificing his life in a final battle of boxing match against Shinpachi.

More Information: http://gintama.wikia.com/wiki/Hijikata_Toushirou