Yunyun is a short, young-looking girl with purple twintails and multicolored eyes (cyan, pink, yellow) marked by a white cross. She wears a dark purple dress with light frills and an open front, with X-shaped straps and a white bow with a pink star. Matching bows appear on her head, thighs, and tail. She has ribbons on her limbs, mismatched legwear, and colored bands. She also has devil horns, dragon-like wings, a striped tail, and candy-like sprinkles in her hair.