I thought I'd never get this done.
Here is a sprite sheet of Sonic's second dark form (I think) from the game Sonic and the Secret Rings, Darkspine Sonic.
Credit goes to the rippers for the original Sonic the Hedgehog sprite sheet.
Recoloring and editing is done by me.
If used, be sure to give me credit or Darkspine Sonic will attack you.
I fixed it
If you were unable to use it because of that
I'm very sorry
Hope it works this time