Superhero movies have always exercised a deep fascination for Hollywood. Decades before the MCU became the film industry's dominant franchise, directors and producers were drawing from comics to create popular blockbusters like 1978's Superman: The Movie, and filmmaker Tim Burton's 1989 directorial feature Batman.Being selected to play the role of a superhero is often considered a badge of honor for popular actors. But there are only so many superhero roles to go around. Sometimes actors who were in the running to play a hero ultimately ended up playing villains instead. Let us take a look at 10 actors who almost got cast as superheroes, but found their true calling on the opposite side of the battle between good and evil.