The Egg Emperor is a large mecha built by Dr. Eggman that appears as a boss in the Sonic the Hedgehog Series.
The Egg Emperor first appears in Sonic Heroes, where it is piloted by Neo Metal Sonic disguised as Dr. Eggman and fought as the final boss of the teams' storylines after completing Final Fortress.
Shadow the HedgehogEdit
The Egg Emperor is mentioned in Shadow the Hedgehog, where E-123 Omega notes its resemblance to the Egg Breaker during the battle with the mech in Iron Jungle.
The Egg Emperor appears in Sonic Rivals as the game's 128th collectible card.