Darkspine Sonic to continue my Sonic forms series from a while ago! 🧞‍♂️🪔 This is 4/9 forms I had planned. I was originally going to…

All Dark Spine Sonic forms by fnafan88888888 on DeviantArt

If there were a form of Sonic that included all previous forms

Darkspine Form, Sonic Ultimate RPG Wiki

Darkspine Form, Sonic Ultimate RPG Wiki

If there were a form of Sonic that included all previous forms

The Sonic forms elaboration thread - Games - Sonic Stadium

Sonic forms (Weakest to Strongest) : r/SonicTheHedgehog

That One Sonic Form missing from the Sonic Games..

Top Five Sonic the Hedgehog Transformations - LevelSkip

Darkspine Form, Sonic Ultimate RPG Wiki