During Prime Earth Sally battle with Regime Amy Rose, the battle thrown them into one of Sonic secret labs the chaos suddenly active a robot, and to Sally horrors it was her, the one that made Sonic fall into darkness years ago in a moment of insanity, Sonic forced Tails to use the fallen doctor tech to bring Sally back, but the cost was she became a cyborg, with Amy making sure she wont be active in order to take Sonic for herself now, 5 years later, Sally reawake into a world of horrors