Luther Devilo, he's a demon king and god of darkness who presides over evil and destruction. He leads the demon clan in hell, a dark place full of violence, cruelty and evil. The words peace and tranquility meant nothing to Luther. What he prioritizes is evil and destruction. His nature is cold and mysterious, it is not easy to guess what is going on in his mind, he is always impulsive, arrogant, cruel and prioritizes his own affairs over other people's.