Petra served under Levi in the Survey Corps and was later hand picked by him to be in his first Special Operations Squad. She harboured a deep respect for him and was proud to be a part of his team. Levi seemed to trust her and her capabilities as a soldier, as she held one of the highest records for killing Titans (48 assist kills and 10 solo kills). After Petra was killed by the Female Titan Levi guarded her body until the Scouts had to retreat back to the wall and was horrified after her father informed him of her intentions to dedicate her life to serving him and the squad, possibly because her father assumed that she had feelings for him.