Once you have all seven rings (only can be used at the final boss).
Sonic and the Secret Rings
no only dark spine sonic
It's Dark Spine Sonic. You have to play through the game and collect the seven world rings.
dark spine sonic is a purple cool looking sonic.he appears at the end of the movie sonic and golden rings.
the sonic forms are super sonic, dark spine sonic, excalibar sonic, calliburn sonic, ultra sonic, solar sonic, eco sonic and ice sonic hyper sonic negative sonic
he got many forms e.g. super sonic, dark sonic, dark spine sonic
dark supersonic
well only if you have the game but I will tell you.The yellow ring is lighting,the green ring is grass,the red ring is fire of course,the blue ring is water,the white ring is light,the purple ring is darkness,and thats all i know because right now im on skeleton done and i need to pass it.sorry guys :(
hes the most badest transformation in the world
Spine world Secret Builders Super Secret neopets
its sonic but not just sonic the hedgehog but hyper sonic not dark spine not super sonic . hyper sonic can double jump and hyper sonic will run somewhere like just a sec and he can use chaos control and he transforms to diffrent colours and if he double jumps near enimie but not toutching it will just die TAKE THAT !
Its the Lumbar area of the spine that becomes concave.