Movies
Rex Features
Rourke will play an arms dealer involved with a band of expendable mercenaries who are attempting to overthrow a South American dictator. Earlier this week, Forest Whittaker agreed to star as a CIA operative.
Jet Li, Dolph Lundgren, Jason Statham and Randy Couture are also among the cast.
Rourke has previously spoken of his gratitude for Stallone, who gave him a high-profile return to the big screen in his remake of Get Carter in 2000.
Shooting is expected to start in Brazil in March.
More: Mickey Rourke, Movies
Related Stories
Movie Reviews
'Top Cat: The Movie' reviewHanna-Barbera's classic cartoon makes a disastrous comeback on the big screen.
Movies Interviews
'Prometheus': Fassbender video interviewMichael Fassbender tells Digital Spy about his android role in Ridley Scott's Prometheus.
At the Movies
How many Snow White dwarves can you name?Nick Frost, Ray Winstone and more try to guess Snow White's classic dwarves.
Movies Galleries
Kristen Stewart wants 'Snow White' sequelKristen Stewart says she wants to expand on the first instalment.
