S-City

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

Monsters

 * Senior Centipede
 * Junior Centipede
 * Human Bird Grass
 * Rafflesidon

Hero Hunt Arc
Junior Centipede and Human Bird Grass emerge from underneath the city to kidnap a sponsor of the Heroes Association, but they are stopped by Metal Bat.

Martial Arts Tournament Arc
After defeating Junior Centipede and Human Bird Grass, Metal Bat is faced with fighting three Demon level monsters, Garou, Senior Centipede, and Rafflesidon. The city is set in high alert during this battle.