Appearances; Levi has short, straight black hair styled in an undercut, as well as narrow, intimidating grey 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 3DMG usage. He is usually either frowning or expressionless; that, plus his extremely calm demeanor, often makes it difficult to guess what he is thinking.
Personality; Levi is described as a "clean freak" by those who know him personally, as he prefers his environment to be spotlessly clean. He is averse to having either his person or his equipment soiled, and he 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. Instances of this include him rescuing a phlegm-coated Eren from the Female Titan's maw and holding a subordinate's bloody, gory hand as Levi comforted him during his last moments.