Beelzebub is the Avatar of Gluttony and is the 6th oldest among the seven demon brothers. Belphegor is the Avatar of Sloth and is the youngest and seventh sibling them. The two are some of the main characters in Obey Me! One Master to Rule Them All. The two share a special bond that allows them to feel what the other is feeling. Beelzebub becomes more talkative whenever Belphegor is around. Belphegor can be persuaded into doing activities he wouldn't normally do because Beelzebub asked him to.