Levi Ackerman (リヴァイ・アッカーマン) is a fictional character from Hajime Isayama manga Attack on Titan. Levi is a soldier working for the Survey Corps Special Operations Squad (調査兵団特別作戦班, Chōsa Heidan Tokubetsu Sakusen-han), also known as Squad Levi (リヴァイ班, Rivai-han), a squad of four elite soldiers with impressive combat records hand-picked by him. The squad takes the protagonist Eren Yeager under their wing as both his bodyguards and potential executors if he goes berserk. Though Levi is a supporting character, his backstory is explored when dealing with his former mentor Kenny during the main series as well as in the spin-off manga Attack on Titan: No Regrets.