The VG Resource

I'm new to this place so if I do anything wrong, tell me.

I know this sheet is kinda small but I felt like (attempting to) uploading it. If it is to small just say, though I feel it doesn't need anymore sprites.

Is this an edit or a custom? If so, not bad! Could use Robotnik's expressions and maybe some "damaged" sprites.

If I recall, this is a boss from Sonic Advance 2. It looks like a good rip, but its missing the tail part. The damaged sprites would be nice to have in there too like Tonberry said.

It's a rip, but it already exists (As Shadow says)
http://www.spriters-resource.com/gameboy...sheet/7126

I don't see how this is an edit, really.