Eggman and metal sonic then knuckles then Amy then mighty the armadillo then Ray the flying squirrel and then you play as tails

If you do not save all the characters, then you play as fang then, if you do not survive as fang you play as the EXE from SOH(spirits of hell) trying to save everybody because he wants to kill them

If you survive us everybody, then you do a boss fight against the Sonic.void (that’s his name) and then you get To an area with the master emerald and then in sonic’s head, it’s gonna be sonic versus sonic.void in a chase Then it’s gonna be super sonic actually just fighting in a mini boss arena and then the final boss if you find all of the hidden characters and items in the game(There’s only gonna be about 10) then hypersonic will fight against null sonic which is basically Sonic.void’s True form