I love those hats , and the moustaches too!
especially the gentlemans hat, (its also the easiest to generate i guess)
the gentlemens moustache is good too, with the openin in the middle , where the nose is.
the two guys at the bottom look like real wife-beaters to me.. like bad cops or something. Great !
the pirate one and the irish? one are nice, but the would be pretty complex to generate, the upperleft one would become hard to generate too, but it's definitely worth a shot.
great.