Many people wonder about Dark Sonic, and exactly how he transforms into what he is. There are three ways Sonic could become his dark self, and they are explored here.

Theory One: The only "canon" time that Dark Sonic was seen was in the anime Sonic X. Now, we all agree that he transformed because he saw Chris and Cosmo suffer. But remember, they were two people. Another element that could have assisted in the transformation: the thousands of fake Chaos Emeralds around Sonic that he had encountered. Their massive-yet-finite energy could have helped to destabilize Sonic, allowing his intense rush...