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B-City (B市 B Shi) is a large city on Earth. This city was briefly seen when the Brain and Brawn Brothers headed there in their quest to rule the world.

There are atleast 12 heroes living in this city.[1]



Number of Heroes by Class:[2]

  • A-Class: 1
  • B-Class: 3
  • C-Class: 8


Introduction SagaEdit

Saitama Introduction ArcEdit

The Brain and Brawn Brothers visit B-City in their quest to rule the world. Before being able to destroy the city, they are defeated by Saitama, but the latter's punch sends the giant falling on the city, demolishing it in his fall.[3]

Hero Association Saga Edit

Rumored Monster Arc Edit

The Hero association executives mention the city being destroyed in Marugori's attack.


  1. One-Punch Man Anime; Episode 14
  2. One-Punch Man Anime; Episode 14
  3. One-Punch Man Manga; Chapter 3, page 21


Cities A-CityB-CityC-CityD-CityF-CityG-CityH-CityI-CityJ-CityK-CityL-CityM-CityN-CityO-CityP-CityQ-CityR-CityS-CityT-CityU-CityV-CityW-CityX-CityY-CityZ-City
Locations Bang's DojoCafe & Restaurant TogusFinal Training GroundHero Association HospitalHouse of Takoyaki 🐙King's ApartmentMonster Association HeadquartersMoonMouse SushiNinja VillageSaitama's ApartmentSmelly Lid PrisonZ Police StationZ-City Ghost Town
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