Samuel L. Jackson announces 'Avengers' cast (AP) - Yahoo! Movies Well it looks like the Avengers cast is now official. Iron Man, Thor and Capt. America will all have their actors reprising their role in the massive project. However, the big additions are Jeremy Renner (The Hurt Locker) playing Hawkeye and Mark Ruffalo (Shutter Island) playing Bruce Banner. Will Banner be in fact the Hulk in this movie, or are we just going to see him in a scientist type role?