True Name: Jack the Ripper Class: Assassin Gender: Female Height: 134cm Weight: 33kg Measurements: B69 / W49 / H71 Source: Historical Fact Region: London Alignment: Chaotic Evil / Earth Image Color: Blood Red Specialty: Dissection "Jack the Ripper," the serial killer who terrorized 19th-century London. Her true nature is an evil spirit-like entity born as a collective of the souls of aborted fetuses. These "girls," wandering the darkness of London as a mass of vengeful spirits, continued to kill women who looked like they could be their mother, and these serial deaths were attributed by the public to a figure known as "Jack the Ripper." Eventually, magi from the Clock Tower realized the cause of the incidents was magical in nature and handled it in secret. It is said that even Sherlock Holmes attempted to solve the case but withdrew upon realizing it involved magecraft. To be precise, it is not that "Jack the Ripper's identity is the spirits of aborted babies," but rather that "they" are merely "one of the possibilities for the unidentified Jack the Ripper." The identities of Jack the Ripper engraved in the Throne of Heroes are countless. Even if "that identity" were to be uncovered, as long as the legend of the "mysterious killer Jack the Ripper" is believed in, Jack's form will not be fixed, taking various shapes depending on the location, era, Master, and Class of summoning. Her wish for the Holy Grail is "to return to the mother's womb." Seeking the one and only place of comfort, she continues to desire this from the Grail. First person: we (watashitachi). As mentioned, since her identity is a collective, she speaks in the plural. On the surface, she is a pure and innocent young girl, the very picture of a child. Because she is an existence aborted before birth, she is innocent and lacks a moral sense of right and wrong. However, her acts of murder are merely a means of sustenance for survival and a regressive impulse, not a preference. Therefore, she will refrain if it is unnecessary or if there is a strong request from her Master. Her favorite food is hearts gouged out from victims. Having no life experience, she is socially naive compared to other Servants as the knowledge granted by the Grail is all she has. However, perhaps because she is summoned as "Jack the Ripper," her mind works at a terrifying speed. Because of this, she is mature as an assassin and killer. Furthermore, she is friendly and lacks mental independence due to her lack of life experience. If the Master is good-natured, she is capable of a certain degree of self-restraint despite her Chaotic Evil alignment. She is said to be especially susceptible to the Master's personality among Servants. She responds cruelly to the malice of others but is vulnerable to kindness. She wears a very revealing Spiritron Dress consisting of an extremely short sleeveless jacket and low-leg string panties, but this is not Jack's personal taste; rather, she feels a sense of shame regarding this outfit.

True Name: Jack the Ripper Class: Berserker Gender: Varies depending on the target of transformation Height: Varies depending on the target of transformation Weight: Varies depending on the target of transformation Source: The Legend of Jack the Ripper Region: London Alignment: Neutral Evil / Earth "Jack the Ripper," the unidentified serial killer who terrorized 19th-century London. However, unlike the young girl of the same name (the collective of fetuses), he is a manifestation summoned from the "diverse images of Jack the Ripper" imagined by people from the time Jack was active until the modern era. He is, so to speak, the personification of the "Jack the Ripper Legend." Thus, he is not the identity itself and does not have a specific form, but no matter whose appearance he takes, he remains "Jack the Ripper." His wish for the Holy Grail is "to know the true identity of Jack the Ripper."

While summoning Jack-chan, the Assassin of Black, they somehow managed to summon Mr. Jack, the fake Berserker, along with her. Just a total blunder-prone Master.