If this guy isn't a hedgehog, why does his face look like it was ripped off of sonic's face (not the SRB2 Sonic sprite) and glued on him? Also, I like how that first one looks. He would probably be much more original if you made him a human like that instead of a hedgehog look-alike thing...
Then again, most people just go OH NO HUMAN = BAD IN SONIC WORLD!!
As long as it's not Whiny Kid (AKA Chris Thordyke) or whats-her-face from Sonic 2K6, then I do not care about there being humans in Sonic.. I mean it worked OK in SA/SA2.
Anyway, with him being a human, I am curious: What abilities and stats will he have?
You only anti-aliased the outline. You need to do that to the shades too. You're still pillowshading btw.