The Red Hulk’s debut in Phase 5 isn’t the only major Marvel moment that has been spoiled in a trailer for a Marvel Cinematic Universemovie or TV show. Marvel Studios has often tried to push the limits when releasing MCU trailers, perhaps most evident in the trailers for Avengers: Endgame, The Fantastic Four: First Steps and, more recently, Thunderbolts*, all of which gave away very little about their project’s story. However, not every MCU trailer has been so secretive, and some have featured some huge revelations.