Haruki Emishi

One of the followers of Volts in Infinity Fortress. He was known as the "Fresh Blood Joker" (Senketsu no Joker) because he would always laugh as the blood of his enemies was shed, always killing with a smile. Also, his skills in combat mean that he is often covered in the blood of his enemies after battles.

He is the only male descendant left from the ancient Western Chinese desert kingdom of Loulan (Rouran) who are able to fight. He is also an admirer and good friend of Shido after the Beast master made his way to his village in the Infinity fortress, delievering food to the starving children, an image radically different to the wandering rumors.

(Source: Wikipedia)