Mare Bello Fiore is a timid but powerful elf guardian of the Great Tomb of Nazarick in Overlord. He is one of the Floor Guardians created by Ainz Ooal Gown, and he serves alongside his twin sister, Aura Bella Fiora. Mare is responsible for protecting and managing the underground garden areas, while also acting as a loyal servant to Ainz. Despite his shy personality, he is immensely strong in battle and highly devoted to Nazarick's goals.