"They've all worked together and done this before – I've just seen all the Marvel movies," explained Rudd. "So to be there on the day [the other heroes arrived], I kind of couldn't stop geeking out about it: 'Oh my God, there's the Shield!' When I was getting the suit on, there's this area where we get changed and stuff, and it's like, 'Oh, there's Iron Man's suit!' I did feel that, that excitement of, 'What? I can't believe that I landed here. This is nuts.'"
In Captain America: Civil War, Chris Evans's patriotic Avenger is joined by a slew of additional Marvel Comics superheroes, including Rudd's Ant-Man, Tom Holland as Spider-Man and Chadwick Boseman playing Black Panther. It's such a packed crew of superhero talent that even the A-list stars of the Marvel universe like Evans and Robert Downey Jr. admit to enjoying rubbing shoulders with the iconic characters as much as the fans in the audience.
"I think what I've learned slowly over time is that once you make some space for yourself, it's all about the other people that you're working with," says Downey, who enjoyed some especially strong screen chemistry with Holland. "I think Tom did a great job [and] I couldn't be more excited than for Chadwick," said Downey. "Casting one of these characters, it's a whole thing. I mean, lives are on the line, you would imagine. It was such a big coup and Tom's really demonstrated why he was the right guy for the job."
Downey returns to the franchise as billionaire Tony Stark and armored alter ego Iron Man. Holland plays a newly rebooted version of the wisecracking teenage webslinger Spider-Man, marking the character's debut in the shared Marvel Cinematic Universe, and Boseman's Black Panther is a royal member of a mysterious African nation with catlike speed, agility and high-tech claws.
Evans added that throughout his now five-film experience playing the super-soldier Captain America, he's been increasingly impressed by how Marvel introduces new crossover characters and storylines into its ever-expanding universe with each new movie.
"You realize how amazing it is what they're doing and what they're accomplishing and how fortunate you are to be a part of this unbelievable inter-webbing of stories," said Evans. "You are just so fortunate to be a part of it. I say, keep going! Let's keep going. Let's let the wave get bigger and bigger. It's not stopping. It's not like they're making bad movies. They're making great movies."
Captain America: Civil War, which also stars Scarlett Johanssen, Anthony Mackie, Elizabeth Olsen and Jeremy Renner, opens May 6.