I like how you got rid of the funky teeth. Already that made him look smarter. This link:
http://www.clipartof.com/portfolio/julos/illustration/3d-red-bob-character-holding-out-a-contract-version-3-57935.html gives even a sleeker look and needs face, expression, clothes etc. Also the more the character is 3D the better.
I really hope to see more from you because you are heading the right direction. Thank you so much for your efforts!