One by one, members of the Avengers and Guardians of the Galaxy assembled at D23 Expo 2017 on Saturday for the Marvel Studios presentation.

AVENGERS: INFINITY WAR at D23 Expo 15 IMAGES

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The sight of seeing nearly every hero in the Marvel Cinematic Universe -- OK, the actors playing them in Marvel's The Avengers: Infinity War -- alongside actor Josh Brolin, who plays the villain Thanos, was a truly geek-out experience.Notably absent from the lineup, however, were Chris Evans (Captain America), Scarlett Johansson (Black Widow), Paul Rudd (Ant-Man), Jeremy Renner (Hawkeye), Chris Pratt (Star-Lord), and Zoe Saldana (Gamora). Production is still underway in Atlanta.Feast your eyes on the cast of Marvel's The Avengers: Infinity War at D23 Expo in the slideshow below:Check out all of our coverage of the Marvel Studios presentation at D23 Expo 2017, including our breakdown of the Infinity War footage , the reveal of Peter Parker's Spider-Sense in the movie, which Avenger the Guardians meet first , and the D23 Expo exclusive Thanos poster given out to fans.Plus, have a gander at these sweet statues of Thanos and his minions, the Black Order, that were unveiled at the Marvel Studios booth, as well as these props and costumes from Black Panther and Thor: Ragnarok