It's in the last episode of Sonic X or at least one of them is he punches him in the stomach real hard being shadow.
shadow knows when shadow was attacking sonic.
Episode 33 of Sonic X entitled "Project: Shadow".
Episode 38
finish sonic shadow and silver's episodes and then u will unlock the last episode which has super sonic super shadow and super silver
Shadow first made his appearince on sonic x in the episode project:shadow.He was then killed off and fans were outraged.So in season 3 of sonic x in the episode trick sand shadow was brought back with no memory of anything.
clearly knucles. He can punch through almost anyting. On episode 5 part 2 of sonic x he punched almost all the trees down. And in episode 76 he hel'ed shadow in place willel spining. So that proves it knucles is stronger
To Prevent death like what Shadow did last time to sacrifice to save the world. Is it from the last episode?
Sonic turns to Dark Sonic in episode 67 (3rd season). It only just shows 5 seconds of his power, but....... Hope this answer helped. Oh, and the episode name is "The Black Trap" or "Teasing Time".
For The Last Boss For The Last Episode. (Beat Sonic, Shadow, And Silver's Episodes)
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.
never in my memory or sight
In one of the final episodes of Sonic X theres a scene where it shows Shadow paying his respects his friend Hope.