'The Avengers' is well balanced, says Chris Evans

The Avengers strikes a balance between action and character development, according to Chris Evans.

The Captain America actor told The Huffington Post that director Joss Whedon has brought "substance" to the Marvel Studios film.

Evans said: "There's obviously action, you've got all these superheroes, there's gonna be a constant battle; I think every ten pages, there's going to be some sort of action. But you can have all the action in the world - if you don't have some substance, you got nothing.

"It's not easy trying to bring all those characters together and find a story, but the best thing about [Joss] is that Joss is a fan, Joss is a comic book guy. It feels so nice working with a guy that is, well, the people I am trying to please is Joss. Joss is one of those dudes."

Evans recently admitted that he had initial doubts about reprising his role as Steve Rogers for the team-up movie, but added that "it couldn't have gone better".

Avengers will see Evans star alongside Robert Downey Jr, Chris Hemsworth, Samuel L Jackson, Scarlett Johansson, Mark Ruffalo and Jeremy Renner. Tom Hiddleston will revisit his Thor role of Loki.

The Avengers opens in theatres on May 4, 2012.

Watch a teaser trailer for The Avengers, from the end of Captain America: The First Avenger, below: