Bikou

Bikou is a Monkey Youkai who is member of the Khaos Brigades Vali Team. He is a descendant of Sun Wukong and the current Monkey King. Being a member of Sun Wukongs clan Bikou comes from the Mountain of Flowers and Fruit like his ancestors. He was given the title of the Monkey King at some point before the series but decided to leave the mountain and join the Khaos Brigade becoming a member of the Vali Team. Bikou is a Senjutsu and Youjutsu user and a powerful fighter as he was able to withstand Tannins flame with little injuries Tannin was also holding back at the time. He also carries a staff that can extend and retract in size and length similar to his ancestors legendary Ruyi Jingu Bang and can summon a golden cloud that he can ride on. Source: Highschool DxD Wiki