Maya Rudolph, John Cena, Jackie Chan, Post Malone sign up for 'Ninja Turtles' voice roles

Rose Byrne, John Cena, Jackie Chan, Ice Cube, Post Malone, Seth Rogen, Paul Rudd and Maya Rudolph have signed up for voice roles in the upcoming animated movie, "Teenage Mutant Ninja Turtles: Mutant Mayhem."