After The Avengers changed blockbuster storytelling, these movies tried to copy its team-up formula, with mixed and often disastrous results.

Marvel has already confirmed many big comebacks for Avengers: Doomsday, and a report indicates another one is being saved for the movie's release.

Doomsday international promo doesn't include any new footage from the movie, but it sets the stage for that by celebrating the Marvel Cinematic Universe's near-two-decade legacy.