Board Thread:Sonic News Channel/@comment-5049481-20140710123501/@comment-5049481-20140715215744

Mystic Monkey wrote:

DavetendoMorpher3237 wrote: Don't forget about Shadow, Rouge, E-123 Omega, Nack, Bean, Bark, Sally, Rotor, Bunnie, Antoine, Uncle Chuck, and new Sonic Comic characters Coral the Betta, Razor the Shark, E-106 Eta, Axel the Egg Boss, Lord Hood, and Tundra the Egg Boss! Most of those characters are Archie characters though.

Unless thats what you mean characters returning in common, then dunno about that. I agree, It'll most likely be just the videogame sonic characters that will reappear in Sonic Boom.