Shinra's director of Advanced Weaponry. During the war, her innovative and high-end weapons brought in a sizable chunk of change for the company. Her wartime efforts—and the resulting profits—saw Scarlet quickly promoted to executive officer.

— Final Fantasy VII Remake loading screen —

Scarlet is a supporting antagonist in the Final Fantasy VII series. She is a minor supporting antagonist in Final Fantasy VII with an expanded role in Final Fantasy VII Remake, "Episode INTERmission", and Final Fantasy VII Rebirth. She also appears in other entries of the extended universe, including Before Crisis -Final Fantasy VII-.

Scarlet is the executive director of the Shinra Electric Power Company's Advanced Weaponry division. She is responsible for the development and manufacturing of the company's weapons, mechs, and materia. Scarlet comes across as refined and elegant, but is actually haughty, cruel-hearted, and ruthlessly ambitious.

Scarlet is a recurring boss throughout the series. She competes with Tifa Lockhart in a slapping minigame and later fights Cloud Strife's party while piloting the Proud Clod with Heidegger in Final Fantasy VII. She fights Yuffie Kisaragi and Sonon Kusakabe in The Crimson Mare during "Episode INTERmission" of Final Fantasy VII Remake Intergrade. Scarlet also battles Tifa, Aerith Gainsborough, and Yuffie in the Crimson Mare Mk. II at the Gongaga reactor in Final Fantasy VII Rebirth.