The Marvel Cinematic Universe (MCU) has come a long way since 2008, with dozens of iconic moments that changed the landscape of superhero films forever. Love it or hate it, the MCU has undeniably dominated the box office for the better part of two decades.

As the MCU approaches the 2027 release of Avengers: Doomsday , it's worth looking back at some of the most memorable moments that shaped this expansive universe. From Tony Stark's iconic launching of the franchise , to the incredible team-up films that paid off the world's extensive build-up, these moments defined the MCU timeline .

10 Tony Stark Says "I Am Iron Man"

Tony Stark's story is perfectly intertwined with that of the Infinity Saga. Robert Downey Jr. debuted as the hero back in 2008, and he imbued Tony with char

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