Levi Ackerman, often formally referred to as Captain Levi, is the squad captain of the Special Operations Squad within the Survey Corps and is widely known as humanity's strongest soldier.
Levi has short, straight black hair styled in an undercut curtain, as well as narrow, intimidating dull gray eyes with dark circles under them and a deceptively youthful face. He is quite short, but his physique is well-developed in musculature from extensive vertical maneuvering equipment usage. He is usually either frowning or expressionless; that, plus his extremely calm demeanor, often makes it difficult for others to guess what he is thinking.
As a result of his early childhood years, Levi is described as a "clean freak" by those who know him personally as he prefers his environment and himself to be spotlessly clean. He is averse to having either himself or his equipment soiled, and has been known to wipe down his blood-smeared blades while still on the battlefield. However, he will not hesitate to touch filth if he deems it necessary.
Appearance: Levi has short, straight black hair styled in an undercut curtain, as well as narrow, intimidating dull gray eyes with dark circles under them and a deceptively youthful face. He is quite short, but his physique is well-developed in musculature from extensive vertical maneuvering equipment usage.
Personality: As a result of his early childhood years, Levi is described as a "clean freak" by those who know him personally as he prefers his environment and himself to be spotlessly clean. He is averse to having either himself or his equipment soiled, and has been known to wipe down his blood-smeared blades while still on the battlefield.
History: Levi was born the son of Kuchel Ackerman, a prostitute who worked in the Underground and was made pregnant by one of her clients. One day, Kenny Ackerman, Kuchel's older brother, came to the city to see her only to find that she was dead.
Levi Ackerman in the story: While on an expedition beyond the Walls, Levi and Hange recover the notebook of a soldier named Ilse Langnar. After reading the contents of the journal, Levi is left stunned and comments that it is what Ilse died for. Levi is seen leaving Trost District, along with the rest of the Survey Corps, on the 56th Expedition Beyond the Walls—the same day the Colossus Titan attacks the district.
Source: Attack on Titan Wiki, available under CC BY-SA 3.0.