Avengers: Infinity War had possibly the most heartbreaking ending in the entire Marvel Cinematic Universe as half of the world’s mightiest heroes crumbled to dust. In an interview with Variety, Elizabeth Olsen explained that even the actors playing the blipped characters were only informed at the last minute. “With these films, you could read a script in an office with a security guard on a specific iPad,” explained Olsen. “…But I didn’t realize I was being faded away until we shot it… We were all just in that van and they were like, ‘That’s what happens. And we say: ‘OK’. It was shocking.” Just as the audience was stunned by the end of the film, so were the actors on the day of shooting.
In an interview with Rotten Tomatoes, the Russo Brothers, who directed both Avengers: Infinity War and Avengers: Endgame, confirmed this story and said that Robert Downey Jr. was the only actor in those films who got a copy of the full script. The Marvel stars have been kept in the dark to keep them from spoiling anything for the press. Of course, the MCU’s secrecy didn’t end with Infinity War and Endgame. In an interview on The Tonight Show With Jimmy Fallon, Elizabeth Olsen admitted that she didn’t know if she would return to the MCU after her role in Doctor Strange in the Multiverse of Madness.