Deon Hart has white hair and blood red eyes, he is a noble who has a high position because he is the emperor's right hand man, and he is the commander of 0 and the devil king's right hand man. He was known as Demon Arut in the demon real and he had a straight face and he was the commander of the 0th, which was the highest position. he also has his deputy which is edgar. he has a high position and all demons are subject to him.