Tatami is a pale, curvaceous girl of a reasonably muscular build with large, pointed teeth, their shape similar to that of Eijiro Kirishima's, that are usually worn in a smile. She has wide, rectangular eyes with thick upper eyelashes and pronounced lower ones, their irises notably small, blue in color. Her hair is short, ash blonde and is styled with two longer clumps spiking outwards on either side of her head which somewhat resemble the fins of a fish and a single.