TV-Series
Description
Mare Bello Fiore stands as a twin Floor Guardian of the 6th Floor "Jungle" within the Great Tomb of Nazarick. Created by Bukubukuchagama alongside his sister Aura Bella Fiora, he embodies the younger twin brother role envisioned by his creator, resulting in a submissive demeanor towards his elder sister.

He appears as a dark-skinned dark elf child with pointed ears, golden hair, and heterochromia—a blue right eye and a green left eye. His attire consists of a blue dragon-scale leather bodysuit, a white and gold vest displaying the Ainz Ooal Gown sigil, a forest-green leaf cloak, and a short white skirt revealing his thighs. A silver-glowing acorn necklace adorns his neck, and he wields a twisted black wooden staff. This appearance frequently leads to him being mistaken for a girl.

Mare exhibits a shy, stuttering, and seemingly timid personality, often needing Aura's encouragement to speak or act. However, this facade conceals unwavering loyalty and ruthless efficiency against Nazarick's enemies. He acts with cold indifference, immobilizing and killing threats without hesitation, inventing tortures when necessary. He participated in mass slaughter, like the Katze Plains massacre, applauding the Royal Army's annihilation.

His interests focus on botany and terrain manipulation, using magic to maintain the 6th Floor's ecosystem by inducing rain for plant growth. He prefers solitary pursuits: reading in the Ashurbanipal library or sleeping bundled in comforters within a magically chilled room. Despite his reclusive nature, he shows unexpected kindness to accepted newcomers like lizardmen or enslaved elves, memorizing their names and permitting them to care for him.

Mare's devotion to Ainz Ooal Gown borders on emotional dependence. He lavishes praise on his master, becomes tearfully overwhelmed by Ainz's encouragement, and fears disappointing him intensely. Failure plunges him into depression only Ainz can alleviate. He strictly avoids independent action without Ainz's explicit permission and vehemently defends his creator's design choices, including his cross-dressing.

In combat, Mare specializes in wide-area destructive magic and environmental manipulation. He ranks as the fourth strongest Floor Guardian overall and second in raw combat power after Shalltear Bloodfallen. His capabilities include spells like "Earth Surge," "Mini-Catastrophe" for large-scale devastation, and "Phoenix Flame" for ally resurrection. He commands high-level elementals and woodland dragons, wields the divine-class staff "Shadow of Yggdrasil," and wears revealing dress armor designed by Bukubukuchagama.

Throughout key events, Mare assisted Aura against a Primal Fire Elemental summoned by Ainz and undertook terrain-camouflage projects. He eliminated threats like the adventurer Kralgra under Albedo's command, immobilized Igvarge before crushing his skull, and joined Operation Gehenna with Entoma to infiltrate Hilma's mansion, subduing Hilma. During the Great Tomb invasion, he transported prisoners to Gashokukochuuou. Later, he constructed decoy tombs near E-Rantel and an artificial sea on the 6th Floor.

Secretive tasks included delivering a bath invitation to Cocytus, requiring borrowed high-level escorts from the library to avoid alerting Aura. During this mission, he helped restrain Albedo after her attempted assault on Ainz. In meetings, Mare advocated for respectful bidding for Ainz's "sleeping voucher" and admonished Aura for attempting to claim a lizardman pet without permission.

Three elves rescued during the Great Tomb invasion acted as parental figures to Mare and Aura under Ainz's direction. Mare maintained his creator-enforced attire, rejecting proposals for gendered clothing reforms. Centuries later, projections indicate he matures into a handsome man after abandoning cross-dressing.