I agree with previous comments
-2,3 and 5 lean back too much
-Demo man is wat more black
-the wrench isnt visible
Also, the fat guy (whats his name) has a weird head IMO... Maybe its because his head is small and his nose big
Edit: No wait its the perspective, he is looking to our left, while all others are looking a bit more towards us, if you know what I mean.
They are still really cool! If you make the animations, I could program the enitre game for you if you'd like! Just mail or PM me anytime