Ryuo

Ryūō (リュウオウ)

The ancestor of Raoh, Kaio and Toki. His mother Ōka sacrificed her life so that he and Shuken would grow up together. Ryūō grew up without the love of his mother and lost all respect for love. In the anime series, it is established that he is also the founder of Hokuto Ryū Ken. Since Ryūō was part of the Hokuto Sōke, he and all of his descendants were born with a Big Dipper-shaped birthmark on their head as proof of their bloodline.