Petra Ral

Petra is a veteran member of the Scouting Legion, and is one of the hand-chosen members of the elite Special Operations Squad under Lance Corporal Levi.

She looks up to Levi as a captain and cares strongly for her team, though notably at odds with Auruo.
Petra is kind and caring, as shown when she looks after and guides Eren when he is first admitted to the squad. Among Levi's squad, she is shown to worry most about him, and wishes he would rely on and trust her and the others; ultimately, she convinces Eren to do so. Petra's words have a major impact on Eren.

Petra's Stats:
10 Solo Kills
48 Assist Kills

(Source: Attack on Titan Wiki)