Fan Casting Justin Hammer in Iron Man 2 (2010)

Justin Hammer is a fictional character appearing in American comic books published by Marvel Comics. As a frequent adversary of the superhero Iron Man, Hammer exists in Marvel's main shared universe, known as the Marvel Universe. As he explains in his first major appearance, Hammer is the reason why many of Iron Man's supervillain enemies have access to extremely advanced technology and why these foes use their equipment for violent crimes instead of profiting by bringing the designs to market. Hammer reveals that the villains are his underworld mercenaries, secretly armed and contractually obliged to fulfill missions against Hammer's competitors and enemies, such as Tony Stark. Sam Rockwell portrayed Justin Hammer, an American defense contractor, in the Marvel Cinematic Universe film Iron Man 2 (2010),[1] where he is considered a rival to Stark.