Ainz Ooal Gown, formerly known as Momonga, is the protagonist of the anime series Overlord. He is the guild master of Ainz Ooal Gown, a powerful guild in the virtual reality game Yggdrasil. After being mysteriously transported into the game world with the appearance and powers of his in-game character, Ainz becomes the ruler of the Great Tomb of Nazarick. His primary goal is to find other players who might have been transported into this new world while simultaneously establishing himself as a supreme ruler. Ainz is known for his strategic mind, immense magical power, and his ability to command loyalty from his subordinates.