Sam Rockwell is reteaming with Jon Favreau for another comic book adaptation, DreamWorks' "Cowboys and Aliens."
Rockwell, who portrays arms manufacturer Justin Hammer in the Favreau-directed "Iron Man 2," has joined the cast of "Cowboys," the alien invasion-meets-the Wild West project that Favreau begins shooting in June.
Daniel Craig, Olivia Wilde and Harrison Ford are already cast in the tale, based on a Platinum Studios graphic novel, of cowboys and Indians rising up against aliens.
Rockwell will play a bar owner named Doc who joins in the pursuit of the aliens. Once Favreau and the writers -- Alex Kurtzman, Roberto Orci and Damon Lindelof -- learned that Rockwell was interested in the movie, they reconceived and expanded the role, which initially called for a heavy-set man.
"Cowboys" keeps Gersh-repped Rockwell, who is known more for his smart indie fare such as "Moon," working in the big-studio world, at least for another movie.
Steven Spielberg, Ron Howard and Brian Grazer also are producing along with Scott Mitchell Rosenberg.