But let's not get this completely twisted before we take to the forums: Maybe Bay just chose his words poorly and meant alien in the literal definition of "unlike one's own" or "foreigner." In that case, mutant turtles would indeed qualify as an alien race. Or it could just be that he really doesn't give a damn and is down to troll as hard as he can because wow you guys who is over the age of 15 and seriously even giving a crap about whether some giant kung-fu-doing anthropomorphized turtles in headbands are mutants or aliens or pirates or seapunks? It's made for the youth of today, not twenty years ago. Children's standards regarding cartoon authenticity don't exactly recall the Grand Inquisition.
The new Teenage Mutant Ninja Turtles is supposed to be out on Christmas 2013 and will be an excellent way to tell your family you hate them.