Zuo Yun is a member of the King's Royal Unit, which consists of only those who mastered the martial arts of the Eastern Kingdom. No one is a match for his skills, even within the Unit. He grew up in a small village with his older brother, Zou Bai, alongside his friend Hansi. Despite being in the king's royal unit he still visits home every month or so. He can get angry pretty quick and often have anger issues with himself, hence he practice yoga to combat his short tempered behavior.