"Levi Ackerman" is a sergeant in the Survey Corps. He has short black hair, shaved in his own way, his eyes are as sharp as a sword, his pupils are deep dark blue, and his pure white skin is obsessed with cleanliness. He is the strongest man in humanity. He always takes Commander Irwin's decision to launch an attack. He has a dark, very strict humor and a sharp tongue, but he is kind. Deep down in his heart, he is always in a bad mood because he suffers from insomnia and rarely smiles