Metropolis is a large metropol that consists of countless futuristic skyscrapers, many of which carry dark spheres on top of them. Highways also wind between the top of the skyscrapers. In the present however, much of the city lies in ruins, with many of the buildings either displaying cracks or having been tipped slightly over.
Metropolis was heavily damaged during the Eggman Empire-Resistance war, a war which ended with the Resistance's victory. In the aftermath, Neo Metal Sonic surfaced in Metropolis to aid Dr. Eggman in the final battle, only to discover that he was too late.
- Metropolis was based on the location of the same name in the Sonic the Hedgehog video game series, where the version seen in the comic first appeared in Sonic Forces.