Beelzebub, being the Avatar of Gluttony, is always hungry. Despite his tremendous food intake, Beelzebub manages to maintain a sculpted body figure through exercise. Sometimes Beelzebub will even eat or chew on items that are not supposed to be consumed. He dreams of a world where he can live happily without a care in the world with his siblings. Despite appearances that he thinks of nothing but food, he is emotionally mature and wants the best for his brothers. He used to be an angel.