Benitora

Benitora's (紅虎, lit. red tiger; Seiyu: Seki Toshihiko) true name is Tokugawa Hidetada (徳川秀忠). His father, Tokugawa Ieyasu, ordered him to spy on Kyo, but Benitora does this for fun and serves as the comic relief of the group. His weapon is the Hokuraku Shimon (Demon Spear) created by Muramasa. He falls in love with Yuya the first time he meets her and tends to be over-protective of her. In order to hide his true identity as heir to the Shogunate from her, he speaks with a noticeable Kansai accent (or in the English dub of the anime, a southern accent) when near her.

He first meets Kyoshiro in volume 2, mistaking him for Kyo. After sparring with Kyoshiro, he decides to join the group. When Kyo awakens in volume 3, he makes Benitora his #2 servant after a short fight.

During the Forest Arc, he fights his former ally, the Fake Mekira. Mekira has the upper hand for most of the fight thanks to a hypnotic technique, but Benitora eventually sees through it and kills Mekira with a special technique of his own, although doing so exacerbates his injuries.

When Nobunaga reappears and overwhelms Kyo, Benitora intervenes, blocking the killing blow and briefly fighting Nobunaga one-on-one. He is completely outmatched, but eventually manages to unhorse Nobunaga with another secret technique, the reverse Hassun, almost killing himself in the process; he is saved from death at Nobunaga's hands by the revitalized Kyo.

Despite not being on Kyoshiro or Kyo's level of skill, Benitora is extremely powerful and is probably one of the strongest humans.

Source: Wikipedia