Sonic, Tails, Knuckles, Mr. Egghead
You have to finish all of the stages in story mode.
You have to complete all 10 storylines in the game.
you get the actuall ending of the story and game
There are 4 episodes Sonic, Shadow, Silver and Last, you unlock Shadow by encountering Shadow in story mode, and Silver's story is unlocked by encountering Silver in Sonic's story, last story is unlocked by beating all 3 hedgehog's stories, none of these are 'hidden' per say, but there the only episodes or stories in the game.
Play the story constantly to get all 10 endings (when you have unlocked all the bosses) then you'll get last story.
he is sort of half robot and part hedgehog
You must clear all 10 finals.You will unlock the final story when you clear the stage you will face Devil Doom.In that battle you are Super Shadow.
There is Sonic, Amy, Shadow, Silver, and Mephiles the Dark, who is actually a dark spirit in the form of a hedgehog.
You have to beat all the bosses and pass all the stages then when you see that all the stages and bosses had been checked off yoi unlock the last story
I am all of me is the main theme song from the shadow the hedgehog game.I is sung by a group called Crush 40
There are no hidden characters.
its shadow the hedgehog o fcourse cuz i went asked all of my family and friends they said its shadow and + i love him :3