Bikou

Bikou(美猴)

Descendant of Son Goku who disappeared with Yuu Long. He likes to make fun of Issei and Rias calling them the "Oppai Dragon" and "Switch Princess". He is a Sen-Jutsu user. Bikou also carries around the staff his ancestor, the first Son Goku, the legendary Monking King and uses his Riding Cloud as well. Bikou is extremely scared of his ancestor claiming that he can still go wild and destroy things despite his age.