Last Utopia Zone boss

The Last Utopia Zone boss is a vehicle that appears in Sonic the Hedgehog Pocket Adventure. It was a modified Egg Mobile created by Dr. Eggman. It was used by the doctor to combat Sonic.

Appearance
The Last Utopia Zone boss is a bulky modified Egg Mobile with a windshield, gray armor, and a green spherical gem on its front. It also is equipped with four small gray rockets on the its back for propulsion. It also have two massive robotic arms attached to it with three fingers on the hands instead of the usual fives. The forearms on the vehicle are bolted and each also possessing a small gray rocket for propulsion, normally hidden by the arms they attached themselves to. On the vehicle back, there's a gray circular receptacle to hold a Chaos Emerald, its power source. Color-wise, its mostly gray with a black underside, red curved lines on the vehicle front, red arms and red lines on the bolted parts of its forearms. It also has Egg Mobile-style yellow and black hazard stripes on its sides and on its underside.

Powers and abilities
Eggman's vehicle moves itself around using rocket propulsion and, as any rocket-propulsed vehicle, is capable of flight. Its only energy source comes from Chaos Emeralds, extracting energy from it using its receptacle on its back. It can attack by spinning at great speeds with its robotic arms fully deployed to hit its targets. Its forearms can also detache themselves of the arms and, using rocket propulsion, fly toward their target to grab them before coming back to the vehicle and strangle them.

Sonic the Hedgehog Pocket Adventure
In Sonic the Hedgehog Pocket Adventure, Dr. Eggman used this vehicle to attack Sonic when he chased after him in Last Utopia Zone. In spite of Eggman's efforts though, his vehicle got destroyed by Sonic in the end.

Battle
The Last Utopia Zone boss is the seventh boss (and possibly final boss if the player didn't collect all Chaos Emeralds by this point) of Sonic the Hedgehog Pocket Adventure. The player fights it during the Last Utopia Zone.

Boss guide
When the player arrives at Last Utopia Zone, chasing after Dr. Eggman while collecting 9 rings in doing so, Sonic will enter the boss fight arena while the doctor takes refuge in his vehicle off-screen. He'll come out with it at the right side of the arena, laughing, holding the purple Chaos Emerald he took from Knuckles in a previous boss fight before installing it in his vehicle receptacle, starting the boss battle. He will then attack using his spin attack, spinning around while reaching during the process the left side of the arena. he will then attack using his rocket-powered detachable forearms to try grabbing Sonic to strangle him (hitting him in the process). He'll repeat those rocket forearms attacks four times before spinning again rightward, repeating the whole process again and again (albeit in a different direction each time) until he's defeated. He will stay immobile while flying during the entire fight, only moving while doing his spin attack.

To defeat this boss, the player has to hit Eggman's vehicle eight times. The player has to be careful however not to get hit by the robotic arms when the boss is spinning or when he attack using his rocket-powered grabbing forearms. To avoid these attacks, the player can either jump above them or, in the case of the rocket-powered forearms, duck under them.

After being defeated, the Last Utopia Zone boss will blow up. Eggman will then flees in his ordinary Egg Mobile while Sonic either chases after him to the next Zone in his Super Sonic form if the player collected all Chaos Emeralds by this point or, in the opposite case, fails to do so. The later option concluding the game on the bad ending with Eggman's Aerobase crashing into the Earth, Sonic in-extremis being saved by Tails. The Zone will be cleared either way.