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Dr. Rachel Claudius is a character introduced in God Eater 2. She is the Vice Chief Supervisor of Fenrir Friar Branch Aragami Technology Department and one of the top brains in the whole of Fenrir. She is the founder of special forces Blood, the orphanage Magnolia Compass, and is part of the God Arc Soldier Research Project. She researches the Power of Blood and also adopted Julius Visconti after his parents' death and made him the first member of Blood.
The Claudius family is one of the rich elite families remaining in the post-apocalyptic world. When she was a child, Rachel was a quiet girl who rarely spoke. This silent behavior and attachment to Leah's dolls angered Leah into pushing Rachel down their house stairs which disabled Rachel spine down and put her in a comatose state. In order to save Rachel's life, the sisters' father Jephthah Claudius used his Fenrir connections to inject P73 Bias Factor into Rachel's body after hearing about Soma's case. This Bias Factor operation regenerated Rachel enough to revive her. She became more talkative after the operation's success, but her body was then similar to an Aragami's. After forgiving a begging Leah's apologies, Rachel gained Leah's promise that she would help Rachel for the rest of her life. At some point in her childhood, Rachel developed a goal to devour the entire world like the Nova apocalypse, probably born from her newly added Aragami disposition. Years later, both the Claudius sisters have become scientists at Fenrir and conduct research to further research on God Arc Soldiers with their father's sponsorship. In God Arc Soldier research, Rachel used orphaned children for test subjects and earned her father's anger for not upholding the phrase "noblesse oblige" which he then claimed he would report her immoral crimes to Fenrir. Rachel then sent the prototype God Arc Soldier Version Zero to eliminate her father to prevent interference in her plans. Rachel first found an orphaned Julius to have potential to use the Power of Blood and adopted him as her "cute doll". Romeo, Nana, and Ciel were also orphans who ended up living in the Magnolia Compass orphanage. After assembling all members of Blood, Rachel plotted Romeo's death by shutting down the God Arc Soldiers during red rain in order to deceive Julius into assisting her under the understanding that he would be helping her God Arc Soldier research to prevent people from risking their lives in battle against Aragami again. When Julius helps her performs a coup de'tat on the Friar, Rachel reveals her prototype God Arc Soldier and the deception she put into place, before knocking him unconscious for his growing transformation into a new Singularity that would devour the world. She then is confronted by the remaining members of Blood who have resolved to stop her plan from succeeding. Rachel brings out the prototype God Arc Soldier, the God Arc Soldier Version Zero and battles Blood with it. After getting defeated, Rachel reveals Julius's transformation and lets her body be absorbed by the growing singularity, The One Who Opens the World. She does not appear again after this. It is unknown if it she was driven by her own intentions or her Aragami side into carrying out her apocalypse plan to devour the world.
In God Eater 2 Rage Burst, she reappears as the main antagonist, taking up residence in the Helix Tree and releasing various experimental Aragami into the tree. In the end, she confronts the Protagonist and mutates into a grotesque Singularity form to fight them. Defeated, she attempts to integrate Julius into herself but is stopped by the Protagonist.
Friar's R&D Assistant Department Head.
Founder of the Blood Special Forces Unit, she is the most gifted scientist ever to work at Friar. She is also the founder of the Magnolia Compass orphanage, which takes in and educates children who lost their parents to the Aragami. Specializes in neurosciences. Longs to execute the Apotheosis Reinstatement Plan with her older sister, Leah Claudius.
Rachel is a young woman with long blond hair and blue eyes. She has a small scar on her left side. She appears to wear dark mourning clothes and a stylish birdcage hat. She is always seen in a wheelchair.
In GE2RB, she returns and now her eyes change to red, and she doesn't require her wheelchair anymore. Whether she actually needed her wheelchair during her adulthood is unclear, as she might have stayed in her wheelchair as a guilt reminder to Leah of her promise to help Rachel with her goals.
- Jephthah Claudius - Her deceased father. Did not approve of her experiments; was killed indirectly by her personal project, the God Arc Soldier Version Zero.
- Dr. Leah Claudius - Her older sister.
- Julius Visconti - The child that she adopted and raised.
- She has a small scar on her face, possibly due to her staircase accident.
- In the later parts of the main story, Rachel is revealed to address people around her as dolls to play with, revealing her child-like view of the world.
- Rachel's name in Katakana is ラケル which is pronounced like the name "Raquel" (Ra-kell). This irregular prounounciation of the name is technically not an incorrect pronunciation as it is an archaic European pronounciation of the name in which "c" was pronounced as "k." This archaic name possibly refers to the fact that Rachel comes from a wealthy European family.