Avengers Doomsday: 7 Fan Theories From The First Trailer - Kotaku
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The first Avengers: Doomsday trailer has fans asking if Chris Evans is playing both Steve Rogers and the villainous Captain Hydra simultaneously.
Dual-Process TheoryCanon vs. FanonHermeneuticsConfirmation Bias

Theory Briefing
- Chris Evans' return to the MCU is fueling speculation he could play two roles — hero Steve Rogers and his evil Captain Hydra counterpart.
- Fan theories dissect trailer details frame-by-frame, treating each visual clue as evidence for competing readings of the plot.
- The double-identity theory hinges on comic-book precedent where Rogers was secretly rewritten as a Hydra agent.
- Multiple rival theories are circulating simultaneously, showing how a single trailer can splinter a fandom into competing camps.