Ko Hiko (黄飛虎 Kō Hiko, Huang Fei-Hu) Buseiou, Wucheng Wang (Voiced by: Kazunari Tanaka (Japanese), Christopher Loveless (English))
Originally, the Yin's Chinkoku Buseio. He is the father of Ko Tenka and Ko Tensho. His superhuman is strength is such that he can destroy even paopei with his bare hands. His body can endure very strong poisons, and he has the force of will to withstand mind control by a super paopei, as he is a tennendoushi (a human with senin bones). For generations, his ancestors served the Yin, so he was loyal to Chuo, but could not withstand Dakki's conniving. He met Taikobo who came to defeat Dakki, and they immediately trusted and respected one other. Some years later, Hiko lost his wife, Kashi and his sister, Koshi, to Dakki's schemes and decided to leave the Yin. After which, he was appointed Kaikoku Buseiou by Ki Shou of the Shuu. He has a rough and cheerful personality. Before he left for the Shuu, he was friends with Bunchu, however, afterwards, they were irreconcilable and ended up fighting during the Sennin war, during which Hiko was hoshin-ed. In the anime, he lived, and he and Bunchu parted on friendly terms.