Mikan has fair skin and long, choppy, dark plum-purple hair that is cut unevenly as a result of bullying. The longest point of her hair appears to be just past her fingertips, whereas the shortest point is slightly above her neck. Her bangs flow straight down, but are also cut at visibly differing levels.
She has pale gray-mauve eyes that almost constantly convey anxiety or tearfulness. There is a beauty mark under her left eye's corner. She wears a nurse uniform which consists of a pale pink short-sleeved shirt with a white collar and puffed sleeves trimmed with white. A short, pale blue, slightly wrinkled pleated skirt is visible underneath. Mikan wears a white apron over this which is tied behind her neck with a ribbon.
It is marked with two red lines on the left side of the apron, one going down to her middle and another short red line perpendicular to the vertical one in a simple design. As well as this, she has bandages wrapped around her left forearm and hand, excluding the fingers, and around her right leg from her mid-thigh to above her ankle.
Additionally, she has a square gauze band-aid on her left kneecap and wears pale pink crew-length socks and white loafers. During her high school years, she wore the standard Hope's Peak Academy uniform with off-white crew-length socks. Her hair was somewhat longer, this time the longest point of her hair being her mid-thigh, and the shortest being her shoulder.
Her bandages were placed differently, this time her left knee and entire right leg being wrapped along with her left forearm, as well as a band-aid being placed on her right cheek. As the Ultimate Despair, she wears a white, old-fashioned, buttoned nurse uniform with a white nurse's cap, marked with the same red line symbol on her apron in her first appearance.
