6. The Turtles Are Now Aliens
One of the most egregious announcements regarding the Ninja Turtles reboot was Michael Bay's suggestion that the turtles would no longer be mutants from exposure to radioactive material, but instead be part of an alien race from another planet. They're teenage
mutant ninja turtles, remember, hence the title change, given that Teenage Alien Ninja Turtles doesn't exactly have the same ring to it. Making them aliens completely undermines the most likeable and amusing attributes of the characters; the hilarious street lingo, their love of skateboarding and pizza - are we really supposed to believe that some intergalactic species just so happens to have invented the same two products and takes a liking to them, too? Oh, and then there's the names of the characters, which, given that they're all named after Renaissance artists of Earth, will make absolutely no sense if they just casually arrive from somewhere else in the universe. Of course, we don't know all the facts yet, but it seems somewhat difficult to skirt around the fact that the whole alien idea just wasn't very well thought out at all.