Anthony and Joe Russo are no strangers to turning comic books into movies.
The two are responsible for some of Marvel's biggest hits.
They are the directors of 'Avengers: Endgame.'
It seems there are no comic book adaptations that can intimidate them.
The two told Business Insider "The more powerful a character is, the more difficult to deal with that character on a narrative level."
That explains why Superman, the most powerful character in comics, is so hard to bring to the big screen.