I live every day of my life like there's no tomorrow so that when my number's up, I can check out with no regrets! No way this horde of zombies is gonna end Mirko the Hero.
Rumi Usagiyama in "Mirko, the No. 5 Hero"

Rumi Usagiyama ( (うさぎ) (やま) ルミ Usagiyama Rumi?), also known as Rabbit Hero: Mirko (ラビットヒーロー ミルコ Rabitto Hīrō Miruko?) is the No. 5 Pro Hero.[3]


Rumi has an athletic build with muscular arms and legs. She has dark skin, red eyes which are tilted slightly inwards, long eyelashes, and straight white hair reaching down past her waist. On her head, she has a pair of long white rabbit ears pointing upwards with a slight crook. Along with these, she also has a round white tail, which gives her overall design a definite resemblance to an albino rabbit.

Her hero costume consists of a sleeveless white leotard with a dark purple trim around her shoulders and waist, a wide, yellow crescent moon design over her chest, and two thick metal plates on 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.

During the Jaku General Hospital raid, her left forearm was crushed by a High-End Nomu.[2]



Rumi is tough and speaks her mind even if it causes confrontation[3] and she respects those who do the same.[4] 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.[3]

Rumi embraces life-threatening situations with a bright grin and is constantly searching for the next big adrenalin kick, showing joy in the face of danger. She does not back down, even when she is overpowered by stronger enemies, claiming to only 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.[2]

Rumi is capable of enduring extreme pain without losing focus. She faces her own wounds reluctantly. She is pragmatic and quick thinking, as she binds off her bloodstream with her own thick hair, to keep fighting without her arm.[2]


Overall Abilities: As the No. 5 Pro Hero, Rumi is more powerful than most other Pro Heroes. Her hearing is outstanding, as she was able to locate her target though minimalistic noise. She was also shown to be capable of multitasking, as she simultaneously attacks, dodges and concludes information about the enemies.[2]

  • Enhanced Strength: Rumi has proved to possess incredible physical strength, being able to easily defeat several Nomus and to break down the huge metal gate that kept Kyudai Garaki's secret laboratory.[5] Remarkably, she was able to momentarily incapacitate some of the High-End Nomu and sever one of their heads.[6]
  • Enhanced Speed: In conjunction with her level of physical strength, Rumi possesses an equally impressive speed. Her speed allowed her to reach Kyudai's laboratory in just a few minutes, being barely slowed by the Nomus that tried to stop her.[5] She was also fast enough to keep up with the High-End Nomu.


Mirko defeating Nomu

Mirko defeating Nomus with ease.

Rabbit ( Usagi?): Rumi's Quirk gives her the attributes and abilities of a rabbit. This grants her incredible leg strength, allowing her to jump and kick with extreme force; she can even destroy large chunks of the ground by thumping her foot. She also has excellent hearing thanks to her rabbit-like ears.

Super Moves

  • Luna Ring (踵月輪 (ルナ リング) Runa Ringu?): Mirko uses her incredible leg strength to kick multiple targets simultaneously as she performs a cartwheel in the air with her legs extended.[2]
  • Luna Fall (月墜蹴 (ルナ フォール) Runa Fōru?): Mirko swings her foot downwards while she is above her opponent, driving her target straight into the ground beneath her feet with a mighty kick.
  • Luna Tijeras (月頭鋏 (ルナティヘラ) Runa Tihera?): Mirko mounts onto her opponent's head and grips them tightly with her legs before twisting her body, pulling with all of her superhuman leg strength to rip her opponent's head cleanly off and then smashing it into the ground.


5/6 A+
5/6 A+
3/6 C
3/6 C
Bounce Power
5/6 A
Rumi's stats, according to the Ultra Analysis Book

Battles & Events

Battles & Events


  • Rumi's surname literally means "rabbit mountain" (兎山 usagiyama?).
    • It could possibly be a reference to the market where Tamako Market is set, as it shares its uncommon name.
  • The moon on her chest and her rabbit-like design, might be referencing the tales of the Moon rabbit.
  • Rumi is currently the highest-ranking female Pro Hero in Japan.
  • Rumi likes carrots,[7] a stereotypical rabbit food.
  • Rumi's hero name was inspired by a professional fighter.[7]
  • Rumi's rabbit-like motif and birthday being in March may be a reference to the March Hare from Alice in Wonderland.
  • Rumi is the first Pro Hero confirmed to not work at an agency or be affiliated with some other institution.[1]
  • Rumi also shares her birthday with Tatsuyuki Tokoname.


  • "To all plotters and schemers out there!! Hope you're ready for me to kick your butts."[8]
  • "Only weaklings join teams!"[9]


  1. 1.0 1.1 1.2 My Hero Academia Official Character Book 2 Ultra Analysis.
  2. 2.0 2.1 2.2 2.3 2.4 2.5 My Hero Academia Manga: Chapter 262.
  3. 3.0 3.1 3.2 My Hero Academia Manga: Chapter 184 (p. 15).
  4. My Hero Academia Manga: Chapter 185 (p. 5-6).
  5. 5.0 5.1 My Hero Academia Manga: Chapter 260.
  6. My Hero Academia Manga: Chapter 262 (p. 15).
  7. 7.0 7.1 My Hero Academia Manga: Vol. 20, Omake
  8. My Hero Academia Manga: Chapter 185.
  9. My Hero Academia Manga: Chapter 184.

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