M-City

M-City (M市, M Shi) is a large city within the world of OnePunch-Man.

Superheroes

 * King

Monsters

 * Tongue Stretcher
 * Giant Crow (Deceased)

Others

 * G4 (Destroyed)

King Arc
G4 appears and challenges King to a fight. King hides in the bathroom giving the excuse that he had to use "the john". Genos later challenges G4 and defeats him. Meanwhile, King runs back to his apartment to play his game but is followed by Saitama. Saitama asks King why he did not fight G4, wondering if the reason was because King had grown bored of fights that could not challenge him. Before King could answer, his apartment is attacked by Giant Crow. King reveals the truth about himself and is saved by Saitama. Saitama tells King he should just get strong, saying that he will come again to play video games as he leaves.