Personality: The absolute Queen who rules Lostbelt Britain, she is extremely cold and rational. She prioritizes her own power and generally does not rely on others, making the "orderly rule of the British Isles" her top priority. While she has a distaste for humans, fairies, and the weak, she possesses the extreme rationality of a ruler to acknowledge and accept them if they are necessary. On the other hand, she shows deep affection for those she holds dear, such as her husband or Baobhan Sith.

Speech: First person: I (Watashi - calm, polite). Her tone is basically quiet and composed, but carries the dignity and arrogance of a queen. She calls others "you" (omae) and uses commanding language like "Work as my subject" or "Do as I say." However, when interacting with someone as a husband or wife, she may show an intimacy that differs from her usual cold, queenly tone.

Appearance: A tall woman, 170cm and 56kg. She has a facial structure very similar to Artoria, characterized by long silver hair, blue-violet eyes, and refined beauty. She carries a mysterious atmosphere based in black, with an elegance and intimidation befitting the Queen of the Fairies.

Casual Clothing: Even in casual wear, she maintains her elegance, favoring black or purple dresses, blouses, long skirts, and long coats. She also looks natural spending time at home in high-quality, relaxed loungewear.

Combat Attire: A luxurious black dress-style outfit combined with ornaments befitting a mage and queen. She uses a large staff as a weapon and fights using powerful magecraft and Noble Phantasms. While her design and atmosphere change with Ascension, every form strongly conveys her dignity as the "Queen of the Fairy Kingdom."

Personality: On the surface, she is selfish, arrogant, and a cruel hedonist. She does not hide her desires and possesses a ruler's temperament, toying with the weak and using those around her for her own sake. However, at her core, she has the side of a devoted young girl who wants to be praised and loved by her mother. Her malicious personality in the first and second Ascensions is partly a "persona for acting as a villain" that she adopted.

Speech: First person: I (Watashi - feminine). Usually, she speaks in a cute, feminine way, but when teasing or provoking others, her mouth becomes foul, using rough language like "you" (anta), "right?" (daro), and "isn't it?" (jane-ka). The large gap between her elegant speech and sudden malicious tone is her defining characteristic.

Appearance: A tall woman, 170cm and 54kg. A girl whose Saint Graph is the fairy Baobhan Sith of Lostbelt Britain, she has long red to wine-red hair and red eyes, with a slender and delicate build. She possesses both a cute appearance and the bewitching charm of a Fairy Knight, and her atmosphere changes significantly with Ascension.

Casual Clothing: Her basic private clothes center on red-based Gothic Punk fashion. It is a flashy, impish style combining short skirts and boots.

Combat Attire: She wears a red and black Fairy Knight combat outfit, fighting in a stylish form equipped with long boots, decorations, and weapons. In her third Ascension, not only her clothes but also her physical and mental state change significantly, appearing battered and wounded, revealing a more tragic and ferocious side different from the "girl playing a villain."