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.[1]


Rumi has an athletic build with muscular arms and legs. She has dark skin, red eyes which are tilted slightly inwards, 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 white gloves on her hands, with long cuffs, sporting small triangular protrusions around the edges.



Rumi is tough and speaks her mind even if it causes confrontation,[1] and she respects those who do the same.[2] 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.[1]


Overall Abilities: As the No. 5 Pro Hero, Rumi can be presumed to be more powerful than other Pro Heroes.


Unnamed Quirk: Rumi seems to have a Quirk that grants her incredible leg strength, by thumping the ground she easily destroys a large chunk of area. This ability is so powerful that it looks like an explosion occurred. This leg strength could also be linked to her rabbit-like features as she bears rabbit-like ears and a tail.

Battles & Events

Battles & Events


  • Rumi is currently the highest-ranking female Pro Hero in Japan.
  • The moon on her chest and her rabbit-like design might be a reference to the tales of the Moon rabbit.
  • Rumi likes carrots.
  • Rumi's hero name was inspired from a professional fighter.
  • Rumi's surname “Usagiyama” literally means "rabbit" (?) "mountain" (?). It could possibly be a reference to the market where Tamako Market is set, as it shares its name.
  • The "ru" in her given name can be part of the katakana of "runa" being "luna" which means "moon".
  • Rumi's rabbit-like motif and birthday being in March may be a reference to the March Hare from Alice in Wonderland.
  • Her short frame, dark skin, animal aesthetics, and emphasis on leg strength and speed makes her similar to Yoruichi from Bleach.


  1. 1.0 1.1 1.2 My Hero Academia Manga: Chapter 184 (p. 15).
  2. My Hero Academia Manga: Chapter 185 (p. 5-6).

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