Created by player Tabula Smaragdina in YGGDRASIL, Albedo appears as a heteromorphic fusion of angelic and demonic traits. She possesses long, lustrous black hair, golden eyes with vertically slit pupils, thick horns protruding from her temples, and black angel wings. Her typical attire is a pure white dress adorned with a golden spiderweb necklace covering her shoulders and chest. In combat, she dons the formidable black full plate armor "Hermes Trismegistus" and wields the glowing green battle-axe "3F." Originally described as promiscuous in her settings, Momonga altered this phrase to "madly in love with Momonga" just before the game's shutdown. This reprogramming became core to her personality upon arriving in the New World, manifesting as obsessive, single-minded devotion to Momonga (now Ainz Ooal Gown). Her love expresses itself through extreme jealousy toward other women interacting with him, such as Shalltear Bloodfallen, and delusional behaviors like creating clothing for imaginary future children. She maintains a private room filled with handmade items related to Ainz, inaccessible even to Nazarick's maids. As Overseer of the Floor Guardians of the Great Tomb of Nazarick, she holds supreme authority among NPCs, managing military and administrative operations. She meticulously oversees the seven Floor Guardians, coordinates defenses, and ensures strict adherence to Ainz's directives, enforcing punishment against any who belittle his commands. Administratively competent, she excels at structuring workflows and managing resources, though she privately struggles with shortages for undisclosed personal projects. Her personality blends calculated elegance with underlying volatility. Outwardly, she presents a dignified, gentle demeanor characterized by constant smiles and refined speech, often mistaken for a goddess. This façade masks a ruthless interior; she derives entertainment from the suffering of Nazarick's intruders or enemies, views humans as an inferior species with hostility, and flies into uncontrollable rage if Ainz is insulted or endangered. Despite her composed leadership, interactions involving Ainz trigger emotional extremes from euphoria to violent jealousy. Her loyalty is exclusively to Ainz, not the guild Ainz Ooal Gown. She secretly resents the other forty Supreme Beings, including her creator Tabula Smaragdina, for abandoning Nazarick. This animosity fuels covert plans to eliminate any returning guild members. Ainz entrusted her with command of a clandestine force including Rubedo and Pandora's Actor, capable of rivaling himself. She also independently develops hidden organizations for unspecified agendas, operating unknown to other guardians. In combat, her level 100 build prioritizes defense, focusing on tanking through race and job levels emphasizing resilience. Her triple-layered armor allows her to withstand three of the strongest magical attacks. Unique skills include projectile deflection, damage redirection to her armor, enemy stunning, and positional swaps with allies. She wields the world-class item "Ginnungagap," effective against structures but less potent against living beings. Her succubus heritage is noted, yet her purity prevents her from riding a bicorn. Her development shows increasing complexity. Initially organizing guardian meetings and supporting Ainz's exploration of the New World, her secretive operations and personal vendettas introduce narrative tension, particularly regarding potential betrayal of the guild's legacy. Interactions highlight contrasts: she clashes with Demiurge over strategy yet cooperates with Pandora's Actor covertly. The duality of her character—devoted overseer and scheming radical—positions her as both a stabilizing force and a latent threat within Nazarick's hierarchy.