Also a Mexican:

I love the mexican guy, nicely done. The mexican hat on the bottle looks cute

Okay: Nice mapping, love the ears. Personally I would fill the eye bit (visor or whatever).Still looks pretty neat.
Nope: Love the mask. Looks so creepy XD.

Nice heads.

love the concept

on the first one i dont think the eye shapes are necesary and i think the circle shape needs that darker shade of green like on the lower ones
second one might be a bit too dark, with the light mask, it makes the detail on the face part hard to see.

mexican is mexican, good

needs more shading and detail