Full SPOILERS ahead for Avengers: Endgame!
Avengers: Endgame, the closing chapter in the Infinity Saga, is finally here and it includes a ton of Easter eggs, cameos, and callbacks to the 21 previous films in the Marvel Cinematic Universe. So we’ve narrowed our finds down to just the biggest ones.
Endgame recreates a slew of memorable moments from the first Avengers movie, Thor: The Dark World, and Guardians of the Galaxy Vol. 1, while also touching upon elements from Infinity War, Age of Ultron, Civil War, Doctor Strange, and Ant-Man and the Wasp. Many of these scenes take place during the Avengers’’ “time heist” to get the Infinity Stones and undo the effects of Thanos’ snap. The most notable facet of these callback scenes are the many cameos from past players.
Source: IGN.com Avengers: Endgame Easter Eggs, Callbacks and Cameos