Metal Sonic, Sonic Wiki Zone

Metal Sonic (メタルソニック, Metaru Sonikku?) is the secondary antagonist of the Sonic the Hedgehog series. He is an evil, ultra-high performance, very advanced Badnik version of Sonic the Hedgehog that was created as a secret weapon by Dr. Eggman for the sole purpose of destroying the hedgehog. Modeled with extreme accuracy after Sonic, Metal Sonic not only resembles his template, but can also imitate his moves and achieve speeds matching and even exceeding the hedgehog's own. The brainchild of Eggman

Metal Sonic v3.0, Sonic Wiki Zone

Metal Sonic - Wikipedia

Metal Sonic Hyperdrive - Sonic Retro

Metal Sonic, Sonic Wiki Zone

Sonic Rivals - Wikipedia

Mecha Sonic Model No.29, Sonic Wiki Zone

Zazz - Super Mario Wiki, the Mario encyclopedia

Neo Metal Sonic (Archie), Sonic Wiki Zone

Team Metal, Sonic Wiki Zone

Metal Sonic - Super Mario Wiki, the Mario encyclopedia

Sonic the Hedgehog 4: Episode II - Wikipedia