"Ribbit, you're a newbie?" Tsuyu Asui is a short and slender girl with distinct frog-like features, including a wide mouth and oval-shaped eyes. Her long dark sea-green hair is tied in a bow, and she exhibits frog-like mannerisms. In her hero costume, she wears a bright green bodysuit with tan gloves, belts, and boots. The suit has black lines framed with yellow, and webbed flippers on her feet. Her winter costume includes a temperature-regulating ring and goggles with a visor.