Herohero is a guild member of Ainz Ooal Gown and regarded as one of the 41 Supreme Beings by the NPCs of the Great Tomb of Nazarick.
His race is an Elder Ooze, which is famous for their specialty in acid-type attacks. Herohero has a polite and humble personality. He enjoyed YGGDRASIL a lot and was hoping that there will be a YGGDRASIL II so that they can play again.
(Source: Overlord Wikia)