Board Thread:Speculation, Theories, and Rumors./@comment-679780-20140614233050/@comment-3005395-20140626002449

Spoilers:

This Sonic is actually the descendant of the original Sonic the Hedgehog, Tails is the descedant of Miles Prower and same with Amy. Knuckles is himself it's just he's gotten stronger and less knowledgeable over time.