This is something I drew as a bit of quick concept art for a fangame called Sonic Epoch, which takes place in the SatAM continuity.

The story behind it is that Sonic was sent ten years into the future by a teleporter accident, and Robotnik has won in the meantime, only sparing Sally and Tails from roboticization because letting them spend the rest of their lives knowing that they failed would be far worse than anything he could do to them.

Now that Sonic's back, he and Sally must try one last time to defeat Robotnik once and for all!

At one point, Sonic would have to fight the roboticized ex-Freedom Fighters, so I drew this as an early design for robo-Bunnie.

This is obviously my first time drawing her in any form, and I'm not particularly happy with the result. Thankfully, the actual in-game art will be done by a different artist. XD