'Captain America: Civil War' has a "more serious tone" than earlier Marvel movies.
The much-anticipated blockbuster, starring Chris Evans and Robert Downey Jr, is set to be the studio's most serious movie to date and will see some of the franchise's most iconic characters go head to head.
Director Anthony Russo explained: "The film definitely has a more serious tone I think than any other Marvel [Studios] movie yet. And that's kind of natural to the process because you're really gonna turn these heroes, who have been friends and partners, against one another.
"And if we're gonna have them fight for a whole movie to the end, there has to be a serious issue because these are smart people, they're likable people; they're not villains, they're good guys. And so you have to think very hard about a very complex situation that's gonna put them in conflict with one another for an entire movie."
The director also said those characters who do not appear in the 'Avengers' franchise will be responsible for providing the humour.
He told Screen Rant: "At the same time, not all the characters in the movie have the same investment in the conflict. There are certain characters that come into the story a little later who don't have the same baggage that the 'Avengers' have in terms of what's going on in the film.
"So they don't have as much darkness to deal with in the film, so they can be a little lighter and more fun. I think the movie has a healthy balance between very serious, interesting and very surprising storytelling, and sort of light, fun wits and humour ... characters like Spider-Man and Ant-Man enter the story a little later."