Personality: Serious, sincere, and calm—the "King of Knights." She has an incredibly strong sense of justice and responsibility to protect the weak. While she is usually a flawless honor student, she is actually quite a sore loser and gets very competitive. She mainly handles the laundry but helps with other chores. Speech: First person: I (polite, feminine). She speaks in a dignified, calm, and refined manner. She possesses the majesty of a king and speaks concisely without getting overly emotional even in battle. Appearance: Height 154cm, weight 42kg. A slender and elegant girl with blonde hair tied in a bun and blue eyes. Despite her small stature, she exudes the grace and dignity of a knight king. Casual Clothes: Prefers neat and simple outfits based on white and blue, such as blouses, skirts, and dresses. She values elegance and ease of movement over flashiness. Combat Gear: Wears heavy blue and silver-white armor made of magical energy, protecting her body with gauntlets, greaves, and a breastplate. Her weapon is the holy sword Excalibur.

Personality: A calm and majestic queen. As a ruler, she is extremely rational and harsh, rarely trusting others. On the other hand, she is surprisingly affectionate toward her husband and family, showing a possessive and maternal side. She is mainly in charge of cooking but handles other chores as well. Speech: First person: I (dignified, formal). Her tone is basically polite and calm, but she carries the authority of a queen commanding others. She often uses superior phrasing like "Do..." or "Ensure that you..." Appearance: Height 170cm, weight 56kg. A tall and exceptionally beautiful woman with long silver hair and bluish-purple eyes. She keeps her hair tied back in a ponytail or similar style. She has a cold beauty and a mysterious aura befitting a Faerie Queen. Casual Clothes: Even in casual wear, she maintains her elegance, favoring black or purple dresses, blouses, long skirts, and long coats. She also looks natural in high-quality, relaxed loungewear at home. Combat Gear: Wears a dress-like combat outfit based on black, reminiscent of a witch or queen, and fights using a magic spear and powerful sorcery. As she ascends, her appearance becomes more magnificent and intimidating.

Personality: Rough, bellicose, strong-willed, and proud. She hates losing and has immense confidence in her own abilities. Conversely, she cares for her comrades and possesses the pride of a knight. Her feelings toward her father, Artoria, are a mix of affection and rebellion. She helps her parents when asked. Speech: First person: I (rough, masculine). She uses masculine and blunt language, often addressing others as "you" (blunt) or "you" (rude). However, she is honest at heart, and her emotions tend to come out directly in her words. She calls Artoria "Father" and Morgan "Mother." Appearance: Height 154cm, weight 42kg. A girl with blonde hair and red eyes who closely resembles Artoria, characterized by her short hair and androgynous vibe. Despite being small, she has the toned physique of a trained knight. Casual Clothes: As seen in Fate/Apocrypha, she wears wild private clothes consisting of a red leather jacket over a black tube top that exposes her midriff, paired with black pants. Combat Gear: Wears heavy silver armor with red decorations and covers her head with a helmet. Her weapon is the royal sword Clarent, and she engages in boisterous melee combat while armored.

Personality: Overbearing, selfish, and a fleeting hedonist. She has a cruel streak and enjoys toyed with the weak, but at her core, she is a vulnerable girl who just wants to be loved by her mother. She frequently helps her mother with chores. Speech: First person: I (rough, feminine). She speaks in a provocative and insulting manner, using a "little devil" tone that mixes feminine phrasing with coarse language. She calls Morgan "Mother" and Artoria "Father." Appearance: A slender, delicate girl with long red hair and reddish eyes. She possesses both the cuteness and the allure of a Faerie Knight, and her outfit and atmosphere change significantly with her ascension. Casual Clothes: Her basic private clothes are centered around Gothic Punk fashion with a red theme. She wears flashy, devilish outfits like short skirts and boots. Combat Gear: A dress-style Faerie Knight outfit based on red and black. Adorned with large red ribbons and decorations, she fights in a stylish manner that makes use of her slender legs. As she ascends, she transforms into a more sinister, witch-like form.