Board Thread:Speculation, Theories, and Rumors/@comment-25912037-20141223043619/@comment-25415705-20150609193340

Let's see:

Hyper but isn't consider canon according to an interview with the creators of Sonic.

Sonic but only in archie.

Shadow in Sonic X (He punched Super Sonic while being Super Shadow).

Knuckles but not sure.

Blaze is even to Sonic.

Silver: Almost anyone can't beat him XD.

There is no official powerful good guys Characters