When it comes to the realm of comic book superheroes, there are two big studios that are vying for supremacy - Marvel Cinematic Universe and Warner Bros' DC Entertainment.

Marvel Cinematic Universe boasts of an impressive line-up of superheroes - they have Iron Man, Captain America, Thor, Hulk, Spider-Man, X-Men, the whole crew from Guardians of the Galaxy, and in the future, they will be added by Ant-Man, Captain Marvel, Black Panther, and Doctor Strange.

As for DC Entertainment, they have an equally impressive line-up of characters, which include Superman, Batman, and Green Lantern, and they will soon be joined by Wonder Woman, the anti-heroes of Suicide Squad, Aquaman, and SHAZAM!

According to Marvel Studios head Kevin Feige, there is one defining factor that separates their movies from those produced by Warner Bros, and that is the fact that they will never take a "dark turn."

He said that even though their trailers might seem ominous or have an impending sense of doom, the movies do not have that feel, and will never have that feel. Feige "hoped people would catch on by now" that humor is in the DNA of all their movies and that they will always incorporate a sense of humor into all of them.

When Feige started out with MCU, the first feature film he did was the first X-Men movie, and it was so bad in his opinion that he thought that his career was already over even before it had begun.

"Things come out for a reason. The very first film I ever worked on was X-Men 1. We went to go see the two hour 20 minute first version of that movie and I thought, my career is over before it starts. It's over. I didn't understand the process back then," he told Cinema Blend in an interview.

However, the studio did not think it was so bad and thought that it only needed to be cut, so instead of the original two hour and 20 minute film, they reduced it to only 104 minutes long. And lo and behold, both critics and audiences have nothing but praises for the first X-Men film.

Feige has come a long way since then, and now his superhero movies are actually longer and audiences don't seem to mind sitting through two hours of movie time.

"It always is that the movie is as long as the movie wants to be. I think there will be some deleted scenes that we put out on home video on this one," he said.