Comic book characters and superheroes go through a number of different incarnations throughout the years, being interpreted in a huge variety of ways on both the page, the small screen and the big screen. With the Teenage Mutant Ninja Turtles transforming from cool and cute to strangely creepy and amphibian, or The Joker morphing from whimsical and camp to utterly terrifying and strange, superheroes and villains change all of the time. Take a look and enjoy viewing the transformations in these then and now photos of the most famous superheroes.