Who new upon it’s release in 2008 that Iron Man original Iron Man would kick off the biggest movie franchise of all time. The MCU is now twenty plus movies deep but it all began with Marvel’s relatively small independently budgeted project. Acting as the introduction of Tony Stark and the revival of Robert Downy Jr’s acting career it has all the DNA of what would become staples of the Marvel Cinematic Universe. But also they changed Jarvis to a robot or something so worst movie ever.