This character is a homage to the famed Japanese samurai folk hero Yagyu Jubei.

He is a character created by Yoshiaki Kawajiri. He is a protagonist of the show. He is a wandering vagabond ninja who wants nothing to do but rest until one day, he got himself involved in a battle between the Hiruko and the Kimon Clan. Later, one of the Hiruko Clan members gave him a Dragon Stone in which he must give it to the light maiden, Shigure. Now he is on an adventure to give the Dragon Stone to Shigure and to protect her from both the Hiruko and the Kimon Clan.

Weapon: Katana.

Special Abilities: Wind Slash Technique, Wire Usage and Head-butt.

(Source: Wikipedia)