Two centuries before the events of the series, Olivia Servant was an S-Class adventurer affiliated with the Odin Adventurer Guild. Known for her strength and eccentricity, she had a habit of burying treasure chests across the country though some contained humorous or trivial items, such as the one later discovered by Noir, Luna, and Leila, which held only a piece of preserved underwear imbued with a skill to prevent deterioration.

During her career, Olivia was approached by a boy who persistently sought to become her apprentice. Although initially reluctant, she eventually taught him a few techniques. His death caused while saving a young girl from an Iron Goblin he managed to defeat using what she had taught him deeply affected her and left her with a lasting desire to train a worthy successor.

While in Honest City, Olivia was confronted by a local hero named Gaien, who demanded she grant him immortality. She refused and defeated him, severing his arm in the process. This incident tarnished her reputation in the city, leading many to view her as a malevolent figure.

Her greatest misfortune came when she discovered the Unending Dungeon. After defeating a demon on its second floor, she fell victim to a trap that bound her in cursed chains, sealing her away for 200 years. She was eventually found by Noir Stardia, whom she chose as her apprentice and successor, instructing and advising him from within her confinement.

While she remained trapped, the dungeon created an imperfect clone of her on the 15th floor. When Noir defeated this replica, the true Olivia was freed from the curse. She initially lived in Noir’s home before purchasing a mansion of her own.

Olivia has long, straight blue hair and matching blue eyes. She possesses a voluptuous figure, with a prominent bust and well-defined hips. Her attire consists of a delicate necklace, a white dress, and a reddish-orange smock tied around her lower waist. She accessorizes with gold armbands and typically goes barefoot.

Olivia is portrayed as lively and confident, often displaying a playful and flirtatious attitude toward Noir Stardia. She enjoys simple pleasures such as eating, playing cards, and drinking in taverns, reflecting her carefree nature. Despite this lighthearted demeanor, she is highly disciplined and focused in combat, showing no hesitation or vulnerability when facing opponents.

Her past reveals a more somber side. Olivia was deeply affected by the death of a boy who had persistently sought to be her apprentice. After teaching him some skills, she later learned he had been killed while saving a young girl from an Iron Goblin, using the techniques she had passed on to him. Consumed by guilt, she blamed herself for his death and even visited his grave, dousing herself in wine as a gesture of remorse.

Two centuries later, she met Noir and chose him as her apprentice, granting him her skills. Since then, she has been protective of him, often expressing concern for his safety whenever he faces powerful adversaries, while continuing to watch over his growth.

Merna Servant
Olivia’s mother, known for her skill in cooking and for often preparing delicious meals for her daughter. Despite her care, Merna was also strict, occasionally scolding Olivia to the point of tears.

Noir Stardia
After Noir discovered Olivia imprisoned in the Unending Dungeon, she entrusted him with her unique skills and insisted he address her as “Master.” In addition to transferring her abilities, she provided him with advice and guidance, often suggesting new skills for him to acquire. Olivia enjoys teasing Noir and occasionally requests “favors” from him, but she is also protective of his safety and shows no urgency in being freed as long as he remains unharmed. Like Emma Brightness, Lola Metrose, and Luna Heela, she eventually develops romantic feelings for him.

Emma Brightness
Olivia displays jealousy toward Emma, both for her closeness with Noir and for having a more voluptuous figure.

Northlad Gaien
During a visit to Honest City, Olivia was confronted by Gaien, who attempted to force her into granting him immortality. Upon discovering that Gaien had created items that attracted monsters, she fought and defeated him, severing his arm in the process. Unaware of Gaien’s true nature, the citizens expelled Olivia from the city. Later, when Gaien boasted of his supposed victory, Olivia retaliated by reducing his lifespan by 50 years.

Littorine
Olivia faced Littorine in battle in the Royal Capital, where Littorine’s rare skill caused her considerable trouble. Nevertheless, Olivia emerged victorious.

Death Chains
The cursed chains that bound Olivia in the Unending Dungeon for 200 years also subjected her to constant torment. They were designed to research and eventually create a copy of her, which manifested as the Olivia Clone encountered on the dungeon’s fifteenth floor.

The given name Olivia is of Latin origin, derived from oliva, meaning “olive tree,” a symbol often associated with peace, wisdom, and endurance. Her surname, Servant (サーヴァント), is a direct borrowing from the English word “servant,” which may reflect her role as a mentor and guide to Noir Stardia, serving as both his teacher and supporter. In Japanese, her name is written as オリヴィア・サーヴァント (Orivia Sāvanto), using katakana to represent the foreign pronunciation.