Metal Sonic (Character) - Giant Bomb

Metal Sonic is a robotic Sonic created by Dr. Robotnik and has appeared in various Sonic games and spin-offs.

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Sonic the Hedgehog (character), Character Profile Wikia

What is your perfect Sonic game idea? : r/SonicTheHedgehog

Mecha Sonic (Sonic the Hedgehog 2) (8-bit)

Metal Sonic, Sonic Wiki Zone

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Metal Sonic

Metal sonic redesign by zeiram0034

Metal Sonic screenshots, images and pictures - Giant Bomb