Beelzebub is the Avatar of Gluttony and is the 6th oldest among the seven demon brothers. He is one of the main characters in Obey Me! One Master to Rule Them All.

Beelzebub, being the Avatar of Gluttony, is always hungry and gluttonous. He fills most of his bag with food during travelling or stays in either places, as seen in Lesson 7-1 when Mammon criticizes his luggage size. He is easily bargained with food and will do any favors for those who promise to pay him with food.

He is emotionally mature and wants the best for his brothers. He dreams of a world where he can live happily without a care in the world with his siblings. He has a childlike innocence and is affectionate, hugging Belphegor as much as he can and asking if he could hold MC's hand until he falls asleep.