Board Thread:Speculation, Theories, and Rumors/@comment-25256883-20160220123602/@comment-679780-20160227215605

I think the first movie may just have Sonic, Dr. Eggman and maybe Tails in it. the next one will have Knuckles and maybe Amy.

It's either that or if the movie will be a trilogy then each movie will be based around Sonic's history in Sonic Generations, but three games are a lot of story to break down for a single movie.