Master Overlord is a dragon-like entity of massive size, dwarfing even the Master Emerald's shrine. He has head armor similar to Neo Metal Sonic's, but with his quills combed more backwards, and he has two red eyes with black sclera aligned vertically on his face. Also, instead of a muzzle, he has a mouth with sharp teeth and red gums. He also has a long gray neck, a chest resembling a blue jet engine with a yellow and black intake, a thin gray spine for a torso section, and a blue pelvis that the Master Emerald is embedded in. Attached to his pelvis are four long, knife-like "legs". He also has a long purple and lavender-striped tail with two axe-like blades at the tip. Also attached to either side of his pelvis is a blue fin-like section, each one having three gray metallic wings with long knife-like feathers attached to them. He also has two arms. Each one consists mostly of a gray cable with a thick blue gauntlet at the end. He also has four-fingered, round dark gray hands with knife-like gray fingers. Also, around each arm, near each side of his shoulders, are two blue fin-like sections. Those fins closest to his torso also have three long gray spikes protruding upward from each of them.
The Battle for Angel Island
After being forced out of his Super State by Shadow the Hedgehog, Neo managed to copy Shadow's biodata in the process. Combining his biodata with Sonic the Hedgehog's, Neo once again powered up with the Master Emerald and fused with his own fortress to become Master Overlord. He then promptly demanded for Sonic to bow to him.