Avengers: Secret Wars promises to be the single biggest crossover event of the Marvel Cinematic Universe since Avengers: Endgame, with plenty of long-awaited character returns likely to finally manifest at long last. Taking inspiration from the comic book of the same name, the plot of Avengers: Secret Wars is likely to see all the MCU’s most prominent heroes and villains together on a fabricated Battleworld at the behest of the all-powerful Beyonder. As such, the film has the opportunity to include some hotly-anticipated returns of long-dormant characters.