User blog comment:Phantom R/Next Sonic Game: Details (Nintendo helping?)/@comment-4189104-20111030133125/@comment-3237817-20111030140058

1: Probably 2: Seems unlikely my guesses are 1) You can choose which sonic to play as to suit the stage 2) The Sonics alternate as the stages pass. E.G Stage 1: Blue sonic Stage 2: Red sonic and so on.