Cyborg Sonic (Pre-SGW)

Early Life
Cyborg Sonic's history was the same as his Mobius Prime counterpart's up until he and his fellow Freedom Fighter were turned into cyborgs by their universe's Robotnik. However, their new half-mechanical bodies made them powerful enough to march on to Robotropolis for a final confrontation with Robotnik. Unfortunately, Robotnik turned the tables on them by subjecting to his own roboticization process, which allowed him to terminate the resistance, except for Cyborg Sonic.

With Robo-Robotnik having become so powerful that he threatened all universes, Cyborg Sonic fled into the Cosmic Interstate in search of new allies to fight him.

Arrival on Mobius Prime
Making his way to Mobius Prime, Cyborg Sonic would appear in front of Sonic the Hedgehog and Sally Acorn and tell his story to them, after which Sonic would agree to help him. After gathering various versions of themselves from other zones, the gathered Sonics would attempt to make a plan of action when they were suddenly attacked by Robo-Robotnik's Shadow SWATbots, an attack which was reppeled by Dr. Robotnik, who offered a temporary truce.

Battle against Giant Borg and Returning Home
After Robo-Robotnik managed to unlock Giant Borg by acquiring the Giant's Hand, he would set upon an army of Sonics, including Cyborg Sonic, who managed to fragment both the robot and Robo-Robotnik into pieces. After his destruction, Cyborg Sonic took Robo-Robotnik's head and, along with all the other Sonics, a piece of the Giant Borg, in order to ensure that it was never reassembled, and returned to his home zone.