OnlyOnAOL: Behind-the-scenes secrets from 'Captain America'

By: Donna Freydkin

Their blockbuster, "Captain America: Civil War," grossed an estimated $182 million domestically in its opening weekend. So we caught up with the directors, Joe and Anthony Russo, to get the inside scoop on their massive hit.

Who had the toughest costume: Paul Bettany, who plays the android Vision. "Paul Bettany for sure. He takes two and a half hours to get into his costume. His prep time was much longer. And removal. He has makeup. He has prosthetics. He has a full suit on. We were shooting in Atlanta in the summer, outside. It was 120 degrees. Bettany turned to say something to us and there was a crease in his latex and sweat just squirted out like a fountain. But he never complained," says Joe Russo.

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What to look for in the new Spider-Man, played by Tom Holland in the film: "What's different about our interpretation is the love I had for the character as a child. He's a high schooler but he's dealing with all this great power but also has homework issues. It was very important for us to cast an actor who was very close in age to a high school student," says Anthony Russo.

The change in Iron Man (Robert Downey Jr.): ""He's going on a growth arc. He's been around for eight years. You're watching these characters mature. He's becoming aware of vulnerability in himself and how he approaches life. He's got an existential crisis he's going through in this movie. We can reflect life. It's long-form storytelling. People change," says Joe Russo.

The secret to gathering all those Avengers together: "The schedules are the trickiest part. This is the most professional group of people. You get people in the same room at the same time. You have to be focused and execute," says Joe Russo.

What to know about the next two, "Infinity War" 1 and 2: "We've just received the script for the first 'Infinity War.' We get into the room with the writers and spend months in a room going through the script line by line. What's the story, what's the theme?" says Joe Russo.

And yes, the name might change: "It's accurate. It came from us. These movies are very distinct movies and we want to make that clear to the audience. They're very distinct stories that occur," says Anthony Russo.