Board Thread:Questions and Answers/@comment-24252369-20131205223149/@comment-4988763-20131205224404

You just read the Dark Enerjak saga from Sonic Universe. There is still much for you to know how the red echidna got all that power, and why did he became like that. I suggest you start reading the comics more often, or just browse the Mobius Encyclopedia for more information on them.

As for your question, it depends on what you consider canon. The Archie comics are a seperate contuinity based on the Sonic franchise that goes beyond the games, and thus are canon on their respective story-line. The SEGA games are canon also, but only canon on their respective game series, though they have major influence in the comics. All in all, it depends on what you consider canon or not.