Rumi Usagiyama, also known as "Rabbit Hero: Mirko," is a 27-year-old Japanese Pro-Hero, holding the impressive fifth rank nationally. With her athletic build, dark skin, and long white hair, Mirko is a striking figure. Her assertive and spontaneous nature, complemented by a unique "Rabbit" Quirk, sets her apart. Fearless in the face of danger, Mirko's independence and formidable combat skills make her a standout presence in the hero world.