ComicBook June 9, 2026

Marvel Officially Rewrote the Rules of the MCU’s Timeline 5 Years Ago Today (& Changed Everything)

Five years ago today, the Marvel Cinematic Universe rewrote the rules of its timeline — and it changed everything for the franchise. Until the Avengers’ Time Heist in Avengers: Endgame, the MCU stuck to a fairly straightforward trajectory, even if alternate realities were alluded to. It wasn’t until

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MCU CONTEXT

Captain America: The First Avenger

The film that planted the MCU's moral compass into 1940s wartime establishes Steve Rogers as the franchise's only true idealist — a character whose values predate any superpower and survive every institutional betrayal. The WWII backdrop gives the conflict genuine historical weight while introducing the Tesseract, Red Skull, and HYDRA as the connective tissue for the next decade of storytelling. Chris Evans finds depth in Rogers' pre-serum determination, making the transformation feel earned rather than arbitrary. It is the franchise's most classically structured origin film: a man who is already a hero before he becomes a superhero.

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