RO635 is a tactical doll from the mobile game and anime series Dolls' Frontline. She serves as the second-in-command of the elite Anti-Rain team, working under the command of M4A1. RO635 is known for her strategic thinking and leadership qualities, often taking charge during missions to ensure their success. Her design is sophisticated, with a calm and composed demeanor that contrasts with her sharp analytical skills. RO635 plays a crucial role in the series, where her tactical prowess and dedication to her team make her an indispensable asset in their fight against rogue dolls and other threats.