Nimue is a key character in the anime series 'Hangyakusei Million Arthur.' She serves as a mystical and enigmatic figure, often acting as a guide and source of wisdom for the Arthurian knights. Known for her deep knowledge of magic and ancient lore, Nimue assists the protagonists in their quest to protect the world from malevolent forces. Her serene and composed demeanor masks a powerful magical prowess, making her an invaluable ally. Throughout the series, Nimue's insights and abilities significantly contribute to unraveling the mysteries surrounding Excalibur and the Arthurs.