|This location exists primarily or exclusively within the Pre-Super Genesis Wave continuity.|
Information in this article may not be canonical to the storyline of the games or any other Sonic continuity.
The Metropolis Zone is a location that appears in the Sonic the Hedgehog comic series and its spin-offs published by Archie Comics. It was a Zone on Mobius controlled by Dr. Eggman that existed during Operation: Clean Sweep.
During the period when Dr. Eggman's Operation: Clean Sweep altered reality and reshaped Mobius, Sonic and Tails, after splitting from Sally Acorn, Boomer, and Antoine, infiltrated the base to find Dr. Eggman. After a brief battle with his newest machine, Eggman retreated to the newly launched Death Egg.
- Note: From this point, the Metropolis Zone's history continues from its new existence in the altered timeline.