Hayate is the son of Shiden and Ayame, and the 18th leader of the Mugen-Tenshin Ninja Clan. After a serious injury that broke his spine, he suffered severe amnesia and was found wandering the forest by Hitomi. His trials in the Dead or Alive tournament awakened his memories, and he returned home soon after. At 23, he now leads them fearlessly and loyally, and is wholly devoted to their laws. He is strong, handsome, and powerful, and is often assisted by his best friend, and ninja, Ryu Hayabusa.