Ainz Ooal Gown, formerly known as Momonga, is the guildmaster of Ainz Ooal Gown, Overlord of the Great Tomb of Nazarick, and the creator of Pandora's Actor. He is regarded as the highest of the Almighty Forty-One Supreme Beings by the NPCs of Nazarick. In the New World, he is the Sorcerer King of the Sorcerer Kingdom and the most powerful magic caster in the world.