Board Thread:Questions and Answers/@comment-6858788-20150708003724/@comment-6858788-20150710231723

Ghostkaiba297 wrote: Those who aren't dead don't really need to appear in every future game for it to be canon

Indeed. It's not ONLY the lack of humans that makes me question the canonity. It's the lack of ANY sort of civilization other than Sonic's friends and the flickies.