Bay reveals new 'Ninja Turtles' mythology The Teenage Mutant Ninja Turtles pose with attendees during the E3 Electronic Entertainment Expo in Los Angeles June 4, 2009. UPI Photo/ Phil McCarten LOS ANGELES, March 20 (UPI) -- Hollywood producer Michael Bay says a new live-action Teenage Mutant Ninja Turtles movie will feature the beloved heroes on a half-shell as aliens. Previous comic books, films and TV shows about Raphael, Leonardo, Michelangelo and Donatello have shown how the titular crime-fighting amphibians fall into a sewer as babies and mutate after soaking in a radioactive substance. Bay said the latest installment in the franchise will change that mythology, EW.com reported. "Kids are going to believe one day these turtles actually do exist when we are done with this movie," said Bay. These turtles are from an alien race, and they are going to be tough, edgy, funny and completely loveable.