Sophie serves as Beevee Liscar's subordinate, skilled in close-quarters knife combat and exceptional long-range sniping. She has short blonde hair and typically wears a green coat. Quiet, reserved, and serious, she can seem unapproachable but demonstrates profound loyalty to her team and a willingness to sacrifice herself for them. Beevee frequently deploys Sophie's combat skills and tactical support on missions.

She accompanies Beevee to negotiate artificial fairy purchases with Wolfran Row. Later, she participates in the ambush of a train to seize a fairy weapon, declaring her readiness to die for Beevee; during this mission, she shoots the train driver, fights Dorothea operatives, and nearly defeats Marlya Noel before Oz Mare intervenes. Sophie also joins Beevee's attack on Ray Dawn's convoy. After Beevee's defeat by Nein Auler, Sophie mourns at his body and closes his eyes. When Nein approaches, Sophie aims her weapon at him but is shot and killed by Dorothea members led by Lily Heineman during the ensuing gunfire exchange.