Levy 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. She is quite short, but her physique is well-developed in musculature from extensive vertical maneuvering equipment usage.