Description
Albedo is the Overseer of the Floor Guardians of the Great Tomb of Nazarick. She is in charge of the general management and supervises the activities of the seven Floor Guardians, meaning that she ranks above all the other NPCs in Nazarick. She is the sister of Nigredo and Spinel. She was created by Tabula Smaragdina.
Source: Overlord Wikia