The Egg Wheel
The Egg Wheel is the boss of Sunset Hill in Sonic Advance 3. Dr.Eggman will attack the player by rolling left and right. When in sight, the player can hit the cockpit to damage the mech. A button in the middle of the stage will make a platform appear to dodge the wheel. After six hits, the machine will explode and Eggman will fly away with a damaged Gemerl.