The superheroes of the MCU have many enemies, but some of their strangest battles have been against other versions of themselves. In recent MCU movie and TV properties, MCU heroes battling alternate universe doppelgängers have become rather frequent, although they usually are a way to showcase a hero’s character development by having them contend with a less mature counterpart or one who made different choices, resulting in a drastically different path. The winners of these fights can make fascinating statements about a character’s multi-film journey by not only showing who is victorious but how they’re victorious.
A common complaint with the Marvel movies, particularly in the early phases of the MCU, is that the heroes are well-defined but their villains are bland by comparison. Numerous MCU supervillains disprove this point, with the Green Goblin, Thanos, Doctor Octopus, Xu Wenwu, and many others being the best possible counterarguments. Throughout the MCU’s crossover films, however, superheroes often fight each other due to factors like misunderstandings, mind control, or a heroic character initially opposing their eventual allies. In Captain America: Civil War, the duplicitous Helmut Zemo engineers a conflict between two ideological groups within the Avengers, resulting in a massive battle between them in an airport and a more personal fight between Iron Man and Captain America in the third act.
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Beginning with Avengers: Endgame, time travel and alternate realities became increasingly prominent in the MCU, resulting in superheroes fighting their own multiverse counterparts or themselves from other points in their timelines. As with previous superhero fight
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