Tsuyu Asui is a student of U.A. High School, a hero-in-training in order to become a Pro-Hero. Tsuyu is a short girl of a relatively slender build and has notably large hands. Her appearance is rather frog-like; she has a very wide mouth, which dips down a little in the middle just like that of a common frog, and oval-shaped eyes with large, black irises, their lower eyelashes visibly pronounced. Amongst her family, Tsuyu's frog-like traits are the least pronounced. She also demonstrates some frog-like mannerisms, such as hopping on all fours instead of running and holding herself in a way that is somewhat connotative of a frog. Her hair is a dark sea-green color and is very long, reaching all the way to her waist with the ends tied together at the bottom in a large bow of hair. She has two shoulder-length clumps framing her face and shorter bangs between her eyes, some of them partially swept to each side.