First Appearance: Sonic the Hedgehog #39
Information: When Sonic the Hedgehog went to a new training facility to blow off steam from a rejected plan (where he would be roboticized to destroy Robotropolis), Nack the Weasel ambushed him. Nack delivered Sonic to Robotnik, who quickly roboticized Sonic. The roboticized version of Sonic, called the true Mecha-Sonic, is more powerful than the robot bearing the same name (later known as Metal Sonic).