Five-seveN is a Tactical Doll, or T-Doll, in the mobile game and anime series Dolls' Frontline. She is based on the real-world FN Five-seveN handgun, which is known for its high accuracy and magazine capacity. In the series, Five-seveN is portrayed as a highly skilled and reliable T-Doll, often leading successful missions. Her personality is calm, collected, and she frequently provides strategic insights during operations. Five-seveN plays a critical role in the fight against the Sangvis Ferri forces, showcasing her leadership skills and tactical acumen.