ST AR-15 is a Tactical Doll (T-Doll) and a member of the elite squad, Anti-Rain, in the mobile game and anime series 'Girls' Frontline.' Known for her calm and composed demeanor, she is a highly skilled assault rifle T-Doll with a strong sense of responsibility. Despite facing numerous challenges, she remains dedicated to her mission and her teammates. ST AR-15 plays a pivotal role in the storyline, often serving as a key strategist and fighter, showing unwavering loyalty and determination to protect her allies and complete her objectives.