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Sonic News Network
Sonic News Network

The Green Grove Zone boss is an object that appears in the Sonic the Hedgehog series. It was a modified Egg Mobile created by Dr. Robotnik that was used by the doctor to battle Sonic in Green Grove Zone during the Flicky Island incident.



Resembling the Egg Mobile, this vehicle is a round hover pod with a transparent glass dome on top and a cockpit within it that features a two-handled steering wheel. Its lower half is covered in gray metal and has yellow and black hazard stripes on the sides and front, a headlamp on its front, downward-aimed rocket thrusters on the sides, and a set of gray pincers on its undercarriage.

Features and abilities

In addition to being capable of flight, this vehicle is equipped with pincers on the bottom that are used to hold and throw an iron ball.


Sonic 3D Blast

In Sonic 3D Blast, Dr. Robotnik used this vehicle to battle Sonic the Hedgehog in Green Grove Zone. However, Sonic was able to use the opportunities Robotnik unwillingly gave him to attack the vehicle and eventually destroy it, thus forcing Robotnik to escape.


The Green Grove Zone boss is the first boss of Sonic 3D Blast. It is fought in Green Grove Zone Act 3 with Sonic the Hedgehog.

Boss guide

At the very beginning of this boss fight, the player has a few seconds before the arrival of Dr. Robotnik to collect nearby Rings. There are a total of four groups of Rings in the boss' arena. Use them wisely and do not take all of them at once, as they do not respawn. After the time runs out, Robotnik flies into the arena in his vehicle.

A while after the fight begins, Robotnik will fly towards Sonic. When it is close, it will throw an iron ball which will bounce around on the ground. This object is best avoided, so the player should run away from it. However, the player cannot allow themself to idle around, as the iron ball will not bounce forward in a set direction. Instead, it moves towards Sonic, regardless of the direction the player heads in. After five bounces however, the iron ball will stop moving, and Robotnik will fly towards it. Once above its iron ball, Robotnik will lower his vehicle down to pick it up. This is where it is vulnerable to attack. To hit him, the player must Spin Jump straight into Robotnik's vehicle. Once the vehicle grabs the iron ball with its pincers however, it will rise up into the air again and repeat its attack patterns.

With each hit landed, Robotnik's vehicle gets more damaged, but its behavior will not be affected. The fight is over when Egg Mobile is hit five times. Then, as it explodes, it will fly away from the arena.


Name Artist(s) Length Music track
N/A (Genesis) N/A 2:32
N/A (Saturn) N/A 2:31



Mega Drive