User blog comment:Sonicrox14/The Tails Doll Curse: The Truth Behind It/@comment-1645715-20100603005437

Correction: There's Metal Sonic, Mecha Sonic, Metallix, Emperor Metallix, Badnik Sonic, Mecha Sonic, Silver Sonic, Silver Sonic II, Metal Knuckles, Mecha Knuckles, Mecha Knuckles, Metallix Knuckles, Badnik Tails, Robofox, Mecha Tails, and Badnik Amy. So Amy does have a metal version.