Back in March we got our first look at Nickelodeon’s new Teenage Mutant Ninja Turtles animated series by way of a cool teaser trailer and some stylish character posters. But now we finally have word on who will be voicing our heroes in a half-shell. EW reports Sean Astin (Lord of the Rings) will voice the rough-around-the-edges Raphael, Jason Biggs (American Pie) will voice the leader Leonardo, Greg Cipes (Teen Titans) will voice party boy Michelangelo and TMNT series veteran Rob Paulsen will voice the intelligent Donatello (he actually voiced Raphael in the original animated series). The series is currently set to air sometime in the fall of 2012, but you can expect an exclusive first look to be debuted at this year’s Comic-Con in San Diego. Hopefully we’ll have someone there to catch that debut, so stay tuned.