Grolantor

Grolantor is a Demon of Gluttony. Long ago, he was one of the Primordials, and the Hill Giants were his favorite children. When Tharizdun spawned the Abyss out of the Elemental Chaos, Grolantor was one of those caught and corrupted. He swayed the Hill Giants away from the worship of the other Primordials, promising them all the world to devour if they served him.
Although Hill Giants still follow the ways of the Ordning out of terror of the might of the Storm Giants, they worship Grolantor in secret, devouring creatures in horrific rituals that honor his unholy name.