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Did you know that in Iron Man, the AI Jarvis was originally going to be a dull computer voice? But Robert Downey Jr. improvised so much that the filmmakers decided the AI needed personality. So they cast Paul Bettany — who recorded all his lines in just two hours, without reading the full script. #ironman #jarvis #robertdowneyjr #paulbettany #aipersonality #marvelmovies #marvelcinematicuniverse #filmtrivia #behindthescenes #moviefacts #superheromovies #improvisedgenius #moviehistory #marvelfans

Watch the evolution of how Marvel animated Iron Man's suit. | Insider Entertainment