It’s hard to believe that the very first film in the Marvel Cinematic Universe debuted nearly a decade ago with Iron Man starring Robert Downey Jr. Now, Marvel Studios is preparing for the cinematic universe’s tenth anniversary with a get-together that has reportedly brought together big names from across the company’s many film franchises.

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Guardians of the Galaxy Vol. 2 director James Gunn posted a picture to Instagram celebrating the get-together. Gunn was joined by Michael Rooker, who played Yondu in the Guardians films, and thanked many of the MCU’s key architects for making the event possible.

The Marvel Cinematic Universe debuted with Iron Man, the film that introduced the world to Downey Jr.’s Tony Stark, an arms dealer who takes a new, altruistic tack on life after he escapes his terrorist captors using a power suit he crafts himself. The many heroes of the MCU came together in 2012’s The Avengers, directed by Joss Whedon, which saw the formation of the superhero team after Loki wreaks havoc with the Tesseract.

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The events of the most recent MCU films will come to a head in the two-part Avengers: Infinity War. The first installment will debut in theaters on May 4, 2018 and is directed by Anthony and Joe Russo. The film will star Robert Downey Jr., Josh Brolin, Mark Ruffalo, Tom Hiddleston, Chris Evans, Chris Hemsworth, Jeremy Renner, Chris Pratt, Elizabeth Olsen, Sebastian Stan, Benedict Cumberbatch, Paul Bettany, Cobie Smulders, Benedict Wong, Zoe Saldana, Karen Gillan, Vin Diesel, Dave Bautista, Bradley Cooper, Pom Klementieff, Scarlett Johansson, Benicio del Toro, Tom Holland, Anthony Mackie, Chadwick Boseman, Danai Gurira, Paul Rudd and Don Cheadle.