Teenage Mutant Ninja Turtles -- UNMASKED!

Here are "Teenage Mutant Ninja Turtles" Donatello, Michelangelo and Leonardo like you've never seen them before ... without any CGI.

The actors playing the shelled crime-fighting superheroes (Jeremy Howard, Noel Fisher and Pete Ploszek) in the new Michael Bay produced reboot of the franchise were decked out in their high-tech outfits on the flick's New York City set on Thursday.

Raphael must have been busy at craft service or something.