Doma is outwardly friendly, possessing an approachable and charismatic air, and is described as talking and acting in a calm and carefree manner by Kanae Kocho. However, it is soon revealed that Doma has psychopathic tendencies, adopting sick beliefs and habits like ruthlessly and happily murdering and devouring his cult's followers and young women, believing that he is saving them from their suffering by letting them "live" inside his body.