A spaceborne construct created by Doctor Robotnik. It is armed with a powerful death ray weapon that can devastate entire zones. (The name 'Egg Satellite' is unofficial as it was never named in the comic, but it is egg-shaped. Not to be confused with the Death Egg.)
Race Against Time
In Issue 11's Sonic story Time Racer, Sonic was lured to the far side of Mobius by Robotnik, who had kidnapped Tails and imprisoned him in a castle in a zone made of fiery pits. With half the world between Sonic and the Emerald Hill Zone, Robotnik activated his Egg Satellite's death ray in order to annihilate Emerald Hill. The ray took five seconds to charge up, which should have been far too little time for Sonic to make it back. By some miracle, however, Sonic was able to reach unheard-of speeds and return home in time. He headed for the beach and used his speed to fuse the sand into glass, creating a giant mirror. Sonic used the mirror to reflect the Egg Satellite's beam back into space and destroy the satellite completely. Emerald Hill suffered no casualties and minimal damage.