Marguerite Valois is a supporting character in the anime Shadowverse Flame: Arc-hen, where she appears three years after the events of the original Shadowverse series. She is a professional woman who previously worked closely with Leon Auranche, displaying loyalty to him while often becoming frustrated by his lack of commitment. By the time of Shadowverse Flame, she has succeeded Leon as the CEO of Genesis Corporation. In this role, she takes charge of investigating a mysterious artifact known as the Arc, but the artifact is stolen by an individual who calls himself the Arc Ruler. Throughout the Arc-hen story, Marguerite continues to lead the search for the Arc. During the final battle between Light Tenryu and Hiro Ryugasaki, the resonance of the Arc allows her to pinpoint its location within the Shadow Area. However, the Arc Ruler claims the artifact and uses it to unleash chaos in Nekome City, turning the local DigiFriends into Shade monsters. Marguerite's personality is defined by her professionalism, dedication to her duties, and her sense of responsibility as the head of a major corporation. Her motivations center on recovering the Arc and protecting the world from the threat it represents. She maintains a key relationship with Leon, her former superior, and interacts with the main cast as a figure of authority and knowledge regarding the Arc. In terms of development, she transitions from a subordinate role to a leadership position, taking on greater challenges and showing her capability in managing a crisis. Notable abilities are not extensively detailed, but she demonstrates strong organizational and investigative skills, and her position gives her access to resources and information crucial to the plot.