Alpha Device

The Metallix always had an affinity with the miracle planet, so when the Brotherhood of Metallix went independent they decided to redo what Robotnik had tried to do before; transform the Miracle Planet into an enormous powerhouse. To do that though they needed Grimer’s genius to make the Alpha Device. They kidnapped him and forced him to build it, alerting Robotnik to the fact they had gone rogue. The Alpha Device was very small but unbelievably powerful, capable of warping the planet’s soil into metal. Soon metallic tendrils were spreading across the Miracle Planet, transforming it into a giant Metallic head with thousands of Metallic factories. The Alpha device grew to the size of a skyscraper until Amy hooked the Kintobar computer into it and deactivated it, restoring the Miracle Planet to normality.

The Alpha Device is colored grey and has a ability to transform the Miracle Planet. It was created by Grimer and used by the Brootherhood of Metallix

It appears in Sonic the Comic #60, #61, #62, #67, #68, #69, #70, #71, #72, #79.