Doma is outwardly friendly and cheery, possessing an approachable and charismatic air. However, it is soon revealed that Doma has psychopathic tendencies. He adopts sick beliefs and habits since before he was a demon he was born into a cult that idolised him, Under his carefree and unassuming demeanor, Doma is a cold and calculating individual with an extremely keen intellect. His high intelligence may be the reason why he looks down on humans, genuinely believing that they are pathetic and sad.