Audrey Duvall is a second-year Pandora student at West Genetics, where she holds the rank of third among all second-year students. She is of French nationality. Physically, Audrey has pale skin, dark brown eyes, and red hair that reaches past her neck, with two notably long strands extending down to her knees. Her nickname is the Slashing Maiden, a title that reflects her combat style.

Audrey’s personality is defined by a strong sense of pride and a noticeable superiority complex, particularly towards first-year students, whom she believes should show deference to their upperclassmen. She is resentful of defeat and holds a strong desire to punish anyone who crosses her path. This prideful and vindictive nature is most prominently displayed following her loss to Satellizer L. Bridget in the West Genetics Carnival, a competitive tournament among Pandoras. After this defeat, she seeks revenge not directly against Satellizer but by targeting her would-be Limiter partner, Kazuya Aoi. She, along with fellow students Trish McKenzie and Aika Takeuchi, confronts Kazuya and his friends, intending to punish him as a proxy for her humiliation.

Audrey’s role in the story is that of a supporting antagonist and a rival, primarily serving as an obstacle for the main characters in the early narrative. Her initial motivations are driven by a desire to restore her wounded pride and assert her dominance over lower-ranked students. However, her character shows signs of development beyond this grudge. In later manga storylines, such as during a soccer match and the Student Presidency Duel Arc, she is seen interacting with Satellizer and Rana Linchen without open hostility, implying that she eventually moves past her initial resentment. During the duel between Arnett McMillan and Ticy Phenyl, she offers commentary alongside other top Pandoras, showing her position as a notable observer of significant events at the academy.

Regarding her key relationships, Audrey is frequently seen in the company of Aika Takeuchi and Trish McKenzie, acting as a trio that enforces a hierarchy based on seniority. Her relationship with Satellizer L. Bridget begins with intense animosity born from her carnival defeat, but it is implied that this conflict eventually fades. She initially holds a dismissive view of other students, such as referring to Arnett McMillan as a psycho, but is later surprised to learn of Arnett’s positive reputation among her peers.

In terms of abilities, Audrey is a highly skilled Pandora, as evidenced by her high rank. Her Volt Weapon, a Pandora’s signature weapon generated from their stigmata, is a poleaxe she calls the Bolt Axe. She is proficient enough to have advanced in the Carnival and is considered a formidable combatant, though she is ultimately outmatched by more powerful Pandora like Satellizer L. Bridget.