At CinemaCon last week, we got an update on the upcoming sequel to Teenage Mutant Ninja Turtles: Mutant Mayhem. While we still don’t have a title for the movie, producers Seth Rogen, James Weaver, and Evan Goldberg announced that Shredder and Krang will be the villains. Both being classic bad guys rooted in the early days of the TMNT, their return is a welcome one, though it also raises some questions.