In Avengers: Infinity War, the biggest MCU teams to date will unite against a common threat, as the Earth-based Avengers finally meet with the Guardians of the Galaxy (when the first Iron Man was released in 2008, nobody could have predicted how much hype would surround this encounter). And time flies so quickly that it seems like Infinity
War was just announced yesterday. But it’s been three years, and the release date is just a year away.

During promotional activities for Guardians of the Galaxy: Vol. 2, Chris Pratt revealed that James Gunn chose the actors for the Guardians team with this type of epic encounter in mind. When casting Star-Lord, the director specifically looked for someone whose presence would be a match for Robert Downey, Jr.'s:

Early on, James said that, when he was casting the role of Quill, he was thinking of somebody who was gonna one day be in a scene opposite Robert Downey, Jr. He knew that character had that potential, that there was a collision course for these characters, potentially. At that time, that was really daunting to think of that. And over the past couple of years, I've been slowly learning, and honing my job and my skill set for this job (via CBM).

If you’re looking forward to seeing Star-Lord and Tony Stark exchange quips, the scenes have already been shot, according to Pratt:

Getting to work with Robert, it just felt really natural. He's a remarkable actor. I'd heard stories about his work ethic, and his specific style of acting in regard to being in the moment, changing things up, keeping you on your toes. Essentially, it's like playing with a great jazz musician or something like that. You kind of work on your chops for years, thinking there's a chance you're going to get a chance to work with this great jazz musician, and then you do, and you watch him go off on some solo, and you're pumped because you know that after four bars you're going to get a chance to come in and do your own thing, and you sit there and you make some good music. It was really cool. I felt like I was playing in part of a supergroup or something.

So, yeah, the Avengers have already met the Guardians of the Galaxy. And Chris Pratt says that he’s almost finished his scenes for the movie, so who knows? Maybe this year's ComicCon will bring us a few pics or some concept art from the set!