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From Iron Man to Groot: Marvel Studios finally releases 10 year "class picture"

Marvel Studios(LOS ANGELES) -- Back in October, Marvel Studios gathered dozens of its superstars for a "class picture" celebrating 10 years of Marvel movies ...and now fans can see the star-studded shot.

The photo features nearly everyone involved with the Marvel Cinematic Universe, starting with Robert Downey Jr., who kicked off the whole shebang along with actor-director Jon Favreau with 2008's Iron Man.

Next to Downey is the man behind the movies, Marvel Studios president Kevin Feige. Behind Feige is Stan Lee, the man who created -- or co-created -- most of the Marvel movie characters. To his right is Chris "Captain America" Evans.

The photo includes some 79 people in all: a who's who of Marvel movie heroes and the filmmakers who brought them to life.  You can see everyone from Doctor Strange star Benedict Cumberbatch, to Ant-Man star Michael Douglas, to the cast of Guardians of the Galaxy -- including the Guardians stars who are only heard, not seen, in the film, like Vin Diesel, voice of Groot.

Marvel also released a behind-the-scenes video of the celebrities mingling.

Sebastian Stan, who plays Bucky Barnes in the Marvel movies, recently told ABC Radio, "It was crazy...I can't even recall a moment in time when all these people have been in the same room!"

Cobie Smulders, who plays secret agent Maria Hill in the MCU, told ABC Radio about the shoot a few months ago.

"It was so ridiculous," she laughed. "You know, when I'm 97...I'll be like, 'Yeah, gather 'round, children...Look at this! Robert Downey Jr. -- he was a big star! And look at me! I'm standing right above him!'" 

Most of the actors pictured will be seen in character together in Avengers: Infinity War, which hits theaters May 4.

Marvel Studios, like ABC News, is owned by Disney.

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