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Ainz Ooal Gown
He 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. While Ainz is a cautious and stingy person, he will always try to plan ahead and control details beforehand in order to avoid any haphazard actions that can endanger Nazarick's existence.