All the playable ones are Sonic, Tails, Knuckles, Amy, Shade, Eggman, Cream, Omega, Rouge, Shadow and Big. The others are Lord Ix, Nocturne Praetorian, Nocturne Decurion, Nocturne Velite, Nocturne Hastatus, Nocturne Scout, Nocturne Triarius and Nocturne Equite including the Gizoids, Gizoid MK. II, Prefect Scylla, Prefect Charyb and Gizoid Guardian.
Sonic Rush, Sonic Rush Adventure and Sonic Chronicles.
They appeared (albeit differently) in Sonic Chronicles as a reference to the cartoon, but were otherwise left as SatAM/Archie exclusive characters.
I don't know maybe if you hack it
sega is the owner of sonic the hedgehog and all sonic related characters
to defeat the in sonic chronicles the dark brotherhood you have to have.......... e 123 omega shade sonic shadow cream and all those people but its not easy to beat the so be careful good lick
No.
Not All the Characters but a Few...
You can find Sonic characters at Wikipedia and Google.
go to the address below when you get on the page, scroll half way down and you should see SONIC BATTLE M.E with all the sonic characters appearing . its a full mugen game, but if you just want the characters then open the folder named "CHARS" . all the sonic characters will be there. http://mugencharacters.ucoz.com/
There is only one official Sonic RPG is Sonic Chronicles.
Spoilers: Yes He Does For The Last Boss.
SEGA is the game company who created sonic and all of the characters