Karyū

Karyū has long bluish-purple hair (red in the anime) and pale lips.

Karyū was born into a clan of Lava Release users. Unlike villages such as Kumogakure where lava users are well-regarded, Karyū lived in a small village where they were only ever treated as disposable weapons of war. For this reason, his clansmen tended to die young. Karyū did not want that fate for himself and so fled his village. His village pursued him and would eventually have found and killed him, but first he was found by Fūshin. Fūshin invited Karyū to join his Lightning Group, which was comprised of kekkei genkai users who wanted to protect the downtrodden in ways that they had never been protected. As a member of the Lightning Group, Karyū robbed criminals and dispersed the plunder to small settlements such as Bamboo Village. The Lightning Group was regarded as heroes by those they helped. When the Lightning Group eventually fell prey to a scheme by Kirigakure and most of their members were killed, Karyū and the few other survivors fled to these settlements they'd helped. The settlements refused to provide them refuge due to them being fearful of Kiri's retaliation; unable to find aid, one of Karyū's comrades died from his injuries. The Lightning Group dispersed and its members went into hiding. Karyū led a despicable existence, likening his life to that of a rat as he tried to avoid detection by the Kiri-nin still hunting him. Then one day he heard of Sasuke Uchiha's attack on the Five Kage Summit. Karyū was amazed that a kekkei genkai user like Sasuke could oppose the hidden villages so openly and decided to follow his example. He established the Dark Thunder Group, its members intent on doing whatever they wanted and exacting vengeance on those who'd wronged them. For his part, Karyū led the Dark Thunder Group against the villages who'd refused to help the Lightning Group. In the anime, Karyū was a bodyguard of En Oyashiro. He helped Fūshin establish the Lightning Group after they fled Oyashiro's service.