Ōko (王虎) is an anime-only warrior who trained alongside Shiryu in Rozan under Dohko's tutelage, in order to obtain the Dragon Bronze Cloth and become a Saint. He was quite powerful, but he had a violent temper, breaking the rules and seeking fight with whoever he could. His temper forced Dohko to expel him, and thus he held a deep grudge against Shiryu.