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 is a slender woman of a shapely yet athletically strong build with dark skin. She has red eyes, tilted slightly inwards, and straight white hair reaching down past her waist with a pair of long fluffy ears poking upwards out of the sides of her head. Along with these, she also possesses 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 playing 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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