Well these are stunning, but to avoid this being a total appraisal thread i shall give you some crits.  I dont really like the gourmand's shadow, perhaps shape it more to his body and pose.  I also adore the pig flamethrower guy, but perhaps a bit more detail on the flames?  Perhaps try and distinguish Party? guys short more from his skin... they seem to blend together a lot.  I think the "not a cliche" deathe reaper could look particularly awesome with a colored orb and ambient lighting (or perhaps a small animation where his orb lights up).  On MUMU there are 3/4 2x2 dark blue squares on his legs.  These squares look good for texturing on the body, but the legs are a lot brighter and therefore they seem a bit out of place.  On Mumu's right eye i also think there is too much eyeball-white showing.  I could go on for hours just nitpicking tiny things that would hardly change the overall stunning appearance of these, but i wont.  Great work!