19. The Turtles Costumes Presented Numerous Technical Challenges
Dealing with complex animatronic costumes can be a challenge even when you've got a monstrous budget at your disposal, but with TMNT's comparatively svelte price tag, it was said to be a pure nightmare at times.
For starters, the costumes - which were designed by Jim Henson's Creature Shop - were cumbersome enough to limit the speed of the actors' movements, resulting in most scenes featuring the Turtles being shot at 22 or 23 frames per second, allowing them to be sped up to 24 and imply faster movement.
That wasn't the only issue, though. Many of the interior scenes filmed in Wilmington, North Carolina were situated close to an airport, causing air traffic control signals to interfere with the Turtles heads, sometimes resulting in some unexpected facial expressions from the Turtles during shooting.
Hilarious in retrospect of course, but surely positive infuriating at the time, especially on a low-budget movie shoot.