Rumi "Mirko" Usagiyama

Mirko's Bio Full Name: Usagiyama Rumi Alias: Rabbit Hero: Mirko, Tiger Bunny. Birthday: March 1 Age: 27 Gender: Female Height: 159cm (5'2½") Hair Color: White Eye Color: Red Blood Type: O Species: Human Quirk: Rabbit Birthplace: Hiroshima Occupation: Pro Hero

Mirko's Appearance: Rumi is a tan-skinned woman of average height. She has narrow red eyes with long, defined eyelashes, and straight white hair reaching her thighs with bangs that extend to the left of her face. While slender and curvaceous in frame, she also sports a lean, athletic, and well-defined build, especially in her arms and legs. From her Quirk, Rumi has long white rabbit ears pointing upwards above her head, along with a small and white round tail, giving her an overall resemblance to an albino rabbit.

Her hero costume consists of a sleeveless white leotard with dark purple trim around her shoulders and waist, a wide yellow crescent moon design over her chest, and a single thick metal plate wrapped around her midriff. She wears purple thigh-high boots to compliment her leotard, with more plating around the heel and toe areas, making her feet look like those of a rabbit. She also has a pair of thick, white gloves on her hands with long cuffs, sporting small triangular protrusions around their edges.

Mirko's Personality: Rumi is tough and always speaks her mind, even if it causes confrontation, and she respects those who do the same. Rumi seems to believe that heroes who join teams are cowards, as they could just be relying on their teammates' strength rather than their own. As a hero, she proves to be very fearless and independent, freely traversing Japan while bravely facing any villain she comes across.

Despite her brash demeanor, Rumi isn't above assisting others, as she came to the aid of Endeavor and Hawks after seeing their battle with Hood on the news. She also requested Endeavor's help while fighting a villain on one occasion, showing that she isn't unwilling to ask for help from other heroes despite her solo disposition.

She also assisted the team assigned to take down Tomura Shigaraki in the Final War, where her overzealous and brash personality clashed with someone who shared similar traits, Katsuki Bakugo, leading to the two arguing on the battlefield.

Rumi embraces life-threatening situations with a bright grin and is constantly searching for the next big adrenaline kick, smiling in the face of danger. She does not back down, even when she is overpowered by stronger enemies, claiming to only be getting warmed up. Rumi also appears to take every day of her life with no regrets, admitting she'd risk her life for the greater good. Her great devotion and bravery even earned her the respect of Endeavor, who vowed to finish Rumi's work and defeat the villains in her stead when the Rabbit Hero was left unable to fight.

Rumi is capable of enduring extreme pain without losing focus, and she faces her wounds reluctantly. She is pragmatic and quick thinking, as she was able to bind off her bloodstream with her thick hair to keep fighting without her arm. To fight in the Final War, Rumi was willing to sacrifice her injured limbs and have them replaced with prosthetics without a second thought, choosing to do so rather than go through time-consuming rehabilitation. Both times she had lost her arms were not enough to halt her rampage, and she was able to improvise and keep up her assault.

When she was in middle school, she was known to be a hooligan, constantly starting trouble by infiltrating fight clubs and joining in the fights, to the point of being expelled from her school. This continued into her high school days where her attraction to fighting arenas led her to the Underground Masquerade. Here she was able to establish her prowess as a future Pro Hero, with her desire not to sit on the sides and finish a fight all the way through, gaining the respect of O'Clock. She also refused to take any compensation for her actions, intending to make it big all on her own in the future.

Mirko's History: In her middle school years, Rumi Usagiyama crashed several fight clubs in Hiroshima, becoming known as the legendary schoolgirl hooligan - "bunny-eared Usako". She was eventually apprehended, and in the end, she vanished after being taken into custody and the name of her school was exposed; she was consequently expelled.

She eventually enrolled into an unnamed hero school in Hiroshima. Some time later, on a school trip to Osaka, she and two of her friends got lost, but a young Fat Gum gave them directions, so the girls prepare to continue on their trip. However, Rumi catches a whiff of her favorite thing, and the scent indicates that a battle is taking place nearby. Before her friends can stop her, she jumps in the direction of where said battle is taking place. Finally arriving at the said place, she is eager to participate in the fun as well.

Rumi broke into the Underground Masquerade, interrupting a fight between Umeda Siberian and Metro Namba Crusher, while also stealing a tiger mask and introducing herself as the Masked Mystery Beauty: Tiger Bunny. The announcer and crowd were confused, until one of the people recognized her as "Usako". Rumi tried to hide her true identity, but nobody bought it, so instead she just piped herself up ready to battle.

The two current fighters lectured her about her actions, before attacking her, but Rumi dodged them and fought back, easily defeating them both before challenging everyone in the club to fight. The rest of the audience reacted with enthusiasm as they all attempted to rush into the cage, with Rumi beating all of them.

The one-sided brawl was immediately interrupted when the alarm went off, followed by gas starting to pour into the arena. In the control room, All For One, who had been watching the fights, had decided to release a gas that makes the Quirks of those who breathe it go out of control. Chaos broke out in the room, and All For One took advantage of the pell-mell situation to steal those Quirks that caught their attention with the help of Kurogiri.

Thanks to the fact that she was above the ring cage, Rumi avoided breathing the gas, but without her noticing, Kurogiri's Warp Gate forms behind her as a hand tries to snatch her Rabbit Quirk. Fortunately for her, she was snagged out of there by the Pro Hero O'Clock. He was there because he had infiltrated the Underground Masquerade to investigate the Quirk-boosting drugs trafficking that took place during the event.

He took her to a safe area, where the underground fighter The Rapper also was. O'Clock asked both of them for help to escape the underground structure and meet back up with the Police Force waiting out front. He recognized Tiger Bunny's uniform, saying he would clear things up with her school, with her responding that they don't need to know about this, asking how she can help.

There was an exit through which they can escape, but O'Clock was concerned by the mysterious fog that can snatch Quirks, so he asked Rumi and The Rapper to make their way while also acting as a decoy, although he also asked them not to use their full powers on people transformed by the gas. O'Clock also came up with a plan B, in case something unforeseen happened, instructing Rumi to escape the facility and get the police squad outside to contact Detective Eizo Tanuma and ask him to call in All Might as backup.[5]

After getting into a brief argument whether "kick power" or "punch power" was superior, The Rapper and Rumi put the plan into action and opened the way by beating everyone, while O'Clock followed them behind, destroying the security cameras after correctly deducing that whoever was controlling the dark mist wasn't currently there. When Rumi and The Rapper were reach the driveway, a mysterious Hooded Man sent by All For One came out to face them, easily taking down the Rapper and Rumi with his ability to extend and bulk his limbs. O'Clock confronted him, and when he realized that he was a tough foe to deal with, he ordered Rumi to proceed to plan B.

Rumi sprinted towards the exit, dodging the guards posted there. The Hooded Man noticed her and quickly stretched his arm to capture Rumi, but O'Clock and The Rapper managed to distract him long enough for her to escape. Rumi busted her way out of the building, as the backup police force looked on in confusion. She called for Detective Eizo, giving him the message from O'Clock, to call All Might.

Eizo agreed and activated the Might Signal, which sends an emergency dispatch request to the Might Tower. All Might immediately headed to Osaka to resolve the crisis, but to buy some time to achieve his goals, All For One uses his Quirk to transform several of the masquerade attendees into villains.

Outside the parking lot, Rumi, Eizo, and the police officers suddenly notice a mob of villains that start to rampage out of control, forcing them to fight them off. Rumi even had to protect the detective when he was attacked by one of these violent rioters. Despite their efforts to stop them, several of them managed to make their way onto the streets, terrorizing the civilians, forcing everyone to flee. Fortunately, All Might was not long in arriving, and in the blink of an eye, he defeated all the villains.

Shortly before this happened, Rumi returned to the interior of the parking lot to continue fighting the Hooded Man. She attacked him out of surprise just as he was about to dispatch O'Clock. The Pro Hero asked her why she had returned, and Rumi replied that she had already finished his little favor and did not want to be on the sidelines, so she came back to kick the Hooded Man's ass. Even The Rapper was surprised by her aggressiveness displayed.

The Hooded Man got up in a rage, swearing that he would kill them all in order to become the strongest, and O'Clock continued to insist to Rumi that she should retreat, but she refused, claiming that she is also a hero in training, so she doesn't run away when there is a villain in front of her. O'Clock resigned to Rumi's stubbornness, but also praised her for doing her job well.

The three of them got ready to resume the fight against the Hooded Man, but the final showdown did not occur. Due to Rumi's intervention, All For One's plans were ruined, so Kurogiri used his Quirk to rescue the creature before All Might arrived. All Might then entered the battlefield, but he was confused to see that there was no villain there. Rumi informed him he got away.

With the crisis resolved and the police cordoning off the area, Rumi prepared to leave. O'Clock told her that she could get compensation if he mentioned her in her report, but she said that she doesn't need it, as she would soon make it up for herself as a full-blown hero.

Before leaving, she asked The Rapper what he was going to do. He simply replied that he's not sure given that all he knows is fighting, and she replied that if he continues as a villain, she will make sure to save her less deadly kicks for guys like him. After this kind of farewell, Rumi jumped away.

Young Rumi Usagiyama would return to her duties and responsibilities to become a Pro Hero, and in a few years she would become the Rabbit Hero: Mirko.