Board Thread:Sonic News and Updates/@comment-9994375-20140206200137/@comment-15225862-20140221173746

Hedgehogsonic11 wrote: KniroAndTito3915 wrote: My prediction is that none of the old characters will appear besides the main four and Eggman. Possibly they will have cameo appearances...

But I could be totally wrong. It's just a guess. The original press release mentioned many old and new characters... Oh. Well never mind then.