Despite being one of the most popular franchises in the world, the Teenage Mutant Ninja Turtles movies haven't utilized many of the series' most popular characters. Fans are finally getting the first ever big screen versions of Bebop and Rocksteady, but the franchise is full of amazing characters that previously seemed too far-fetched for a live-action movie. With technology now making that a thing of the past, it's time to open the doors and start bringing all of these characters to life.