Mitsuki is a woman with spiky ash-blonde hair and red eyes; the same aforementioned traits that her son Katsuki inherited. Because of her Quirk, she maintains a youthful appearance despite being in her late thirties. She is wearing a white blouse underneath a lavender cardigan with a short black skirt. Much like her son, Mitsuki has a short-tempered nature that quickly leads to an aggressive attitude, unlike her son, Mitsuki is normally able to be very calm, polite, and respectful.