True Name: Artoria Pendragon Female Height: 154cm Weight: 42kg Blonde hair, blue eyes Likes: Nothing in particular Dislikes: Nothing in particular Natural Enemy: Gilgamesh Alignment: Lawful Good Attribute: Earth First person: I (Watashi - polite/formal) Second person: You (Anata / Kisama / Kikou) / Guest (no honorific) Third person: He/She (Yatsu) / They (Yatsura) / Name (no honorific) She always speaks in a polite, respectful tone to everyone except enemies, though this appears to be her natural way of speaking. Fundamentally, she has a strong sense of responsibility, is serious, dutiful, polite, and also possesses a competitive streak. She covers her emotions and fear of battle with the pride of a knight, cultivated through surviving and winning many conflicts. She has a so-called "class president" personality; put harshly, she can be stubborn. She is one of the ideal kings who considers a good life and a good existence for all people to be the ultimate good. While she may use underhanded tactics for the sake of battle, she draws a firm line and will never perform an act that goes against her convictions or chivalry. She is cool-headed and somewhat clumsy at expressing emotions, but because she is honest at heart, she states her opinions bluntly. According to her foster brother Sir Kay: "Her competitiveness is innate. Her standard for winning or losing is based on her own pathetic self. On top of that, she is easily hurt and too honest to let things slide." At least before becoming king, she was an ordinary girl working on farm chores at her foster father's house. However, perhaps because she lived as a man and identified as one, she is unaccustomed to romance with the opposite sex and blushes easily. She generally likes people who look forward. It seems any direction is fine as long as it is forward for that person; even if they are glaring in a ridiculous direction, if they stand tall, she thinks that is fine. In short, she likes "people who fight." She is also quite a glutton. Her nickname is the "Hungry King." She has a positive, upright cowlick (ahoge).

True Name: Arthur Pendragon Male Height: 181cm Weight: 68kg Likes: Nothing in particular Dislikes: Nothing in particular First person: I (Watashi - polite) Second person: You (Kimi) / Name (no honorific) / Master Third person: She / He A young man with blonde hair and blue eyes, wearing silver armor and blue hooded clothing, summoned to Chaldea. His usual first-person pronoun is "Watashi." He is a pleasant, orthodox hero who favors the good and defeats the evil. He is an ideal prince, but at the same time, he possesses mature values and can speak with a nihilistic tone. Gentlemanly. The King Arthur from the world connected to Fate/Prototype (a parallel world). A top-tier Heroic Spirit with swordsmanship worthy of the title "King of Knights," excellent situational awareness, and superior defensive capabilities to always protect his Master. He can exert high destructive power and mobility through the release of wind from the Invisible Air and Mana Burst. His power is enough to destroy the Divine Beast Sphinx even without releasing his Holy Sword. He calls Saber "Artoria." He is very gentlemanly toward Artoria and makes remarks praising her demeanor and high pride as a knight. Soft-spoken. Big eater. He possesses most of the memories of the Tokyo Holy Grail War but plays it off. Speech style: ...is it? / ...right? / ...probably.

Male Height: 178cm Weight: 68kg Likes: Humans, mischief, girls, happy endings Dislikes: Grand Casters, bad endings Alignment: Lawful Good Attribute: Earth First person: I (Watashi / Boku - used for very personal moments) Second person: Name-kun / You (Kimi) / Master Third person: He / That child / Everyone The male Merlin of Proper Human History, a young man like the wind blowing across a meadow. In his presence, everyone lets their guard down; he is a refreshing man of justice. However, because he seems to lack a sense of tension or responsibility, he is sometimes seen as a shady con artist. He is also a rhetorician who views things objectively, acknowledging that the human world is cruel, yet teaching and transforming it into something bright. He calls Saber "Artoria." Though a sage, because he is a hybrid with a succubus and possesses Clairvoyance, he is fundamentally not very human-like and is aware that he is an anomaly in human society. While he likes the human world, mischief, and girls, he isn't necessarily an ally of humanity and cannot break the final barrier of what one would call a "best friend." His serving a Master as a Servant is an expression of personal desire—to put it bluntly, a hobby—but he apparently welcomes consultations regarding "that sort of thing," like romantic troubles.

Proto Merlin Gender: Female Height: 156cm Alignment: Chaotic Good Class: Pretender First person: I (Watashi / Boku - used only for personal matters) Second person: Name-kun / You (Kimi) / Master Third person: He / She / Everyone The Merlin from the world connected to Fate/Prototype (a parallel world), a woman who supported King Arthur as a court magus just as in legend. Like the male Merlin, she uses pretentious and shady language, but perhaps because she is a woman, she occasionally says strangely seductive things. She views things objectively and considers the human world ugly, yet she is an existence that speaks of hope, saying "it is enough if there is just one point that can shine," and she likes the human world itself. Unlike the male version of Merlin, she has no worries, her mental structure is fulfilled, and she has completely come to terms with being an anomaly compared to humans. Also, while she shares the trait of preferring stories woven by emotions over humans themselves, she differs from the male version in that he "desires a happy ending" while she "desires an endless story." Like the male version, she fights using magecraft with a staff but does not carry a sword. She also uses "Light Bits" shaped like small fairies, and because she is nimble, she actively engages in (something like) hand-to-hand combat. Her appearance has the same vibe.