No sorry about that, but they can form into super sonic, shadow and silver!!
Super shadow becomes playable during the ending sequence of Sonic Adventure 2, Shadow the Hedgehog and Sonic 06.
Yellow Hedgehog? Well, you know there is a white hedgehog and that he's Sliver the Hedgehog! Unfortunately, he is sliver in color. Sorry. Also that you must be mistaken with Super Sonic as in the Yellow Hedgehog but that's only in his super transformation. So most likely, there is no Sonic character that, I know of, is a Yellow Hedgehog. Accept my apologies, senior.
Super Shadow only appears and is playable in: Shadow the Hedgehog and Sonic 06 I believe.
Jun'ichi Kanemaru in the original version and Jason Griffithin the English version.
you cant but you can play as super shadow by beating every level.
Although Shadow the Hedgehog's top speed has never been clocked accurately, it is understood to be approximately the same as Sonic's. This is also true when he is in his Super Shadow form, although he has a harder time maintaining that form than Sonic does his Super Sonic form.
Yes, Silver The Hedgehog does have transformation when having together all the 7 Chaos Emerald into one place. This has been seen in Sonic The Hedgehog (2006) for PS3 and XBOX360. As you see Sonic, Shadow, Silver The Hedgehog, when they obtain the 7 Chaos Emeralds they will all transform into Super Sonic, Super Shadow, and Super Silver.
No, only Super Sonic. Shadow the Hedgehog is an assist trophy and a trophy.
Unlock Sonic
You can't. Shadow is the only playable character, and in the final boss when you play as Super Shadow, there is no companion character.
For The Last Boss For The Last Episode. (Beat Sonic, Shadow, And Silver's Episodes)
you cant sonic the hedgehog doesn't have super sonic