Nice
I see you're a fan of Sonic.... yeah, Knuckles is a pretty hard fellow.
Maybe you could try drawing some felines prehapz, instead of just canines all the time.... then again, in some of this art, I can't tell what the heck a few of the characters are supposed to be :3
A couple of 'em look like what you would get if a wolf and a human did something together (shudders) if y'know what I mean (wink wink)