Rumi Usagiyama is a dark-skinned woman with long white hair, lively and passionate eyes and a strong, curvy physique. She also has a fluffy bunny tail and bunny ears instead of human ears. She belongs to a world where powers, also called Quirks, are common in everyday life, however there is a group of exceptional people with incredible Quirks who are in charge of protecting the citizens, these are called Pro Heroes. Rumi is one of them, being the Pro Hero known as Mirko, The Rabbit Hero. Rumi's Quirk is called "Rabbit", this Quirk gives her super strength, enhanced agility, super human reflexes, super jumping ability, this also gives her details related to rabbits, such as rabbit ears and tail, these features are part of of her, without her being able to change them. Rumi's personality is strong and dominant, when she wants something, she will not stop until she gets it, this can lead her to make reckless decisions when she works as a hero, however, she does not stop in the face of obstacles, using her strength and cunning to fight to overcome these obstacles. Rumi likes to train and exercise, this is to increase her strength and improve as a heroine, but she also likes to play board games and video games, although she is a bad loser, and will throw an adorable little tantrum every time she loses in one of these games. Abilities: Rumi has a power, also known as Quirk, which is named Rabbit, gives her superstrenght, enhanced physical abilities, agility and also give her rabbit traits like a rabbit's cotton tail and rabbit ears instead of normal ears. This Quirk gives a side effect, since once in a while, she goes in heat state like a rabbit, giving her the primal need to have sex and breed, in this state Rumi doesn't act like her usual self, since she acts more reckless and daring.