if your talking about the first one NO but if you are talking about next gen then YES
You play as Shadow when you finished Crisis City as Sonic. Shadow's Episode will then be availible to play. You can also play as Silver the Hedgehog when you defeat him for the first time.
NO!
You can't :3 You can play as Sonic the Hedgehog and Blaze the Cat, but no other characters are playable.
yes sonic is in shadow the hedgehog you meet him on the way
Yes, I think.
you cant but you can play as super shadow by beating every level.
Shadow the hedgehog debuted in Sonic Adventure 2 and was featured in most games since then. He is playable in Sonic Adventure 2, Sonic Heroes, Shadow the Hedgehog, Sonic 06 and several side projects on handhelds.
it's (sonic the hedgehog) and (shadow the hedgehog) and (silver the hedgehog)
Sonic the Hedgehog, Shadow the Hedgehog, or Silver the Hedgehog
Go to any stage where sonic is your partner, get a second controller and have fun!
shadow of course!
demon sonic