TV-Series
Description
Mare Bello Fiore is a dark elf and the twin brother of Aura Bella Fiora, serving as her co-guardian of the Sixth Floor within the Great Tomb of Nazarick. Created by Bukubukuchagama, his design enforces a dynamic where the younger brother obeys the elder sister, shaping his submissive demeanor toward Aura.

He possesses dark skin, pointed ears, golden hair, and heterochromatic eyes—blue in the right and green in the left. His attire consists of a blue dragon scale leather suit, a white and gold vest embroidered with the Ainz Ooal Gown sigil, and a forest-green leaf cloak. A short white skirt, white silk gloves, an acorn-shaped silver necklace, and a twisted black wooden staff complete his distinctively feminine presentation, frequently causing outsiders to mistake him for a girl.

Shy and reticent, Mare often stutters in conversation, maintaining a meek facade that contrasts with his unwavering loyalty to Ainz Ooal Gown and ruthless efficiency in duty. He harbors apathy toward outsiders, displaying cold-blooded determination against threats to Nazarick, a cunning noted by other Floor Guardians like Demiurge. Mare dislikes prolonged social interactions within Nazarick, preferring solitude for reading in the Ashurbanipal library or sleeping. His interests include collecting plant species and observing Ainz's actions, often lavishing praise on his master.

Emotionally, Mare fears disappointing Ainz, becoming deeply distressed by failure. He questions his worth when tasks falter, requiring direct encouragement from Ainz to recover his resolve; such positive reinforcement moves him to tears, reinforcing his devotion. Mare demonstrates perceptiveness toward his sister's moods and Nazarick's servants, offering compliments to loyal followers like the lizardmen.

Early events revealed Mare's intense fear of Ainz, causing hesitation during greetings and reluctance in combat training. During Ainz's Sixth Floor visit, Mare resisted fighting a summoned Primal Fire Elemental until Aura forcibly involved him. After the battle, Ainz offered water, easing his anxiety and fostering newfound trust. Mare later proposed camouflaging Nazarick with earth and plants, a plan Ainz approved. He coordinated undead and golems for the task, showcasing his druidic magic specializing in terrain manipulation.

His responsibilities include reporting to Aura before leaving the Sixth Floor and patrolling the area during her absences. He collaborates with her on missions, such as gathering resources from other floors for Nazarick's concealment. When troubled by duties, he consults fellow NPCs but remains dependent on Ainz's guidance for complex tasks. His magical specialization focuses on earth manipulation and area-of-effect destruction, enabling abilities like earthquake generation and terrain alteration.