<P> Paul Bettany reprises his role from previous films as J.A.R.V.I.S. , Stark 's AI system . Ty Simpkins portrays Harley Keener , a boy who becomes Stark 's sidekick , as part of a three - picture deal with Marvel Studios . Ashley Hamilton portrays Taggart , one of the Extremis soldiers . William Sadler plays President Ellis , ( named after Warren Ellis , who wrote the `` Extremis '' comics arc that primarily influenced the film 's story ) and Miguel Ferrer plays Vice President Rodriguez . Adam Pally plays Gary , a cameraman who helps Stark . Shaun Toub reprises his role as Yinsen from the first Iron Man film in a brief cameo , and Stan Lee makes a cameo appearance as a beauty pageant judge . Dale Dickey plays Mrs. Davis , mother of an Extremis subject that is framed as a terrorist . Wang Xueqi briefly plays Dr. Wu in the general release version of the film . A cut of the film produced for release exclusively in China includes additional scenes featuring Wang and an appearance by Fan Bingbing as one of his assistants . Mark Ruffalo makes an uncredited cameo appearance , reprising his role as Bruce Banner from The Avengers , in a post-credits scene . Comedians Bill Maher and Joan Rivers , and Fashion Police co-host George Kotsiopoulos have cameo appearances as themselves on their respective real - world television programs , as do newscasters Josh Elliott , Megan Henderson , Pat Kiernan , and Thomas Roberts . </P>
<P> Paul Bettany reprises his role from previous films as J.A.R.V.I.S. , Stark 's AI system . Ty Simpkins portrays Harley Keener , a boy who becomes Stark 's sidekick , as part of a three - picture deal with Marvel Studios . Ashley Hamilton portrays Taggart , one of the Extremis soldiers . William Sadler plays President Ellis , ( named after Warren Ellis , who wrote the `` Extremis '' comics arc that primarily influenced the film 's story ) and Miguel Ferrer plays Vice President Rodriguez . Adam Pally plays Gary , a cameraman who helps Stark . Shaun Toub reprises his role as Yinsen from the first Iron Man film in a brief cameo , and Stan Lee makes a cameo appearance as a beauty pageant judge . Dale Dickey plays Mrs. Davis , mother of an Extremis subject that is framed as a terrorist . Wang Xueqi briefly plays Dr. Wu in the general release version of the film . A cut of the film produced for release exclusively in China includes additional scenes featuring Wang and an appearance by Fan Bingbing as one of his assistants . Mark Ruffalo makes an uncredited cameo appearance , reprising his role as Bruce Banner from The Avengers , in a post-credits scene . Comedians Bill Maher and Joan Rivers , and Fashion Police co-host George Kotsiopoulos have cameo appearances as themselves on their respective real - world television programs , as do newscasters Josh Elliott , Megan Henderson , Pat Kiernan , and Thomas Roberts . </P>
who played the president in iron man 3
who played the president in iron man 3
William Sadler
William Sadler