Rumi is a dark-skinned woman of average height. She has red narrow eyes with long, defined eyelashes, and straight white hair reaching her thighs with bangs that part to the left of her face. While slender and curvaceous in frame, she also sports a lean, athletic and well-defined build, especially in her arms and legs. From her Quirk, Rumi has long white rabbit ears pointing upwards above her head, along with a small and white round tail, giving her an overall resemblance to an albino rabbit.