Queen Mio's character design reflects her status as queen of the Dark Kingdom. She wore a striped bodice accented with hearts, accompanied with a hot pink skirt. She also wore a pair of black gloves and stockings with a pair of ankle-high boots. Further accessories include a pink, fur-trimmed cape, a skull-capped wand, and her plush dog Choppi. A common theme of her wardrobe is a Valentine heart.