Neo metallix

Neo Metallix

Neo Metallix was an alternate form of Metal Sonic, it was built by Grimer as a robot that could change it's shape.

It managed to make people believe that Sonic was evil by taking his form and attacking the Freedom Fighters. The robot was defeated when the Real Sonic (whom it had kidnapped earlier) managed to cause a volcano to erupt while it was inside. There was only one encountered, but there could be more out there...