Board Thread:General Discussion/@comment-26873653-20151212201934/@comment-27056607-20151225082130

I don't think sega or sonic team really care about continuity any more anyway. They just do what they always do: make at least one new reaccuring character per big installment. Some have back stories and some don't, but it doesn't matter to them. Knuckles is popular so they have him join just about every game even if it doesn't make sense to. Just like how Shadow was popular enough to NOT die and basically have his story retold in his own game and then have nothing to do afterwards so he joins GUN (I guess he forgave them for killing an innocent girl in cold blood and overlooked propbably killing many more since they are really bad at protecting anyone). Knuckles is the only person with a real job and has a motivation for to do but never seems to do it anymore. The least they could do is explain it!

Why was Knuckles in heroes? or 06? or riders? ect. We may never know

At the very least Sonic makes since in every game because he has no backstory, family, favorite place or person. All the motivation he needs that he is good and it is fun to him.

P.S. They don't care about continuity so much that they moved Blaze and eggman nega from another dimension to the future and BACK to another dimension! xD