Levi Ackerman.

About Levi Ackerman

Levi Ackerman is one of the main protagonists of Hajime Isayama's manga series Attack on Titan. Levi is a soldier working for the Survey Corps Special Operations Squad , also known as Squad Levi , 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.