The Eggman Empire Fortress is a colossal fortification and the Eggman Empire's military headquarter.
The War to Take Back the Planet
After getting ahold of a mysterious artifact known as the Phantom Ruby, Dr. Eggman defeated and captured Sonic and conquered the majority of the planet. The Eggman Empire Fortress served as a major location belonging to the Eggman Empire. Thanks to the help of the Resistance (formed by Sonic's friends and allies and comprised of many more soldiers), other allies, and a past version of himself from an alternate reality, Sonic was freed and helped to stop Dr. Eggman's conquest and save the world from his clutches. This ended in a confrontation between Sonic and Eggman, the latter piloting his latest Death Egg Robot in the fortress itself. Sonic was victorious, and the mad genius was defeated. (StH: #1)
The Eggman Empire Fortress is a high-tech fortification with spotlights located in the middle of a deep crater whose edges are surrounded by high walls. These walls extend into the depths of the crater, forming staircase-like levels. Rising up from the center of the crater is a massive high-tech tower with tall metallic pieces forming hoops circling around it. The fortress also has several floating platforms.
- The Eggman Empire Fortress 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. It was unnamed in the comic, but is considered tier 2 canon by this site's canon policy, as it does not contradict already established canon from tier 1.