User blog comment:DaRealLeon/Super Smash Bros. 4 Characters/@comment-33480874-20120502110045

That fact that Sonic characters have appeared along Mario characters means that there is a good chance for more Sonic characters to appear.

Anyways, here's how I think the move sets should be for the Sonic characters.

Sonic the Hedgehog                                                                                                                  Standard B: Homing attack                                                                                                         Sideways B: Spindash                                                                                                            Up B: Spring                                                                                                                             Down B: Werehog Transformation                                                                                              Final Smash:Super Sonic

Shadow the Hedgehog                                                                                                              Standard B:Homing Attack                                                                                                        Sideways B:Chaos Spear                                                                                                           Up B: Chaos Control to teleport                                                                                                                     Down B: a small chaos blast or Chaos lance                                                                                                            Final Smash:Super Shadow or Chaos Control to stop time or a large Chaos Blast

Silver the Hedgehog                                                                                                                  Standard B:Some thing similiar to Mewtwo and Lucario's Standard B                                                                                                        Sideways B: Spindash                                                                                                           Up B:Levitation                                                                                                                         Down B: Phsicic Knife                                                                                                           Final Smash: Super Silver or grabs an opponent with his ESP and attacks them