Gunn made the announcement Tuesday on his Facebook page, a day after revealing that “The Newsroom” star John Gallagher Jr. had been cast as one of the lead actors.
“Tony will play Barry Norris,” Gunn said in his post. “Norris is a guy who is used to being in charge at the Belko Building in South America, so it isn’t easy for him to start taking orders when the office employees are mysteriously forced to either start killing each other or be killed.”
The story follows an American company after its mysteriously sealed off in South America. The employees show their true colors when they are ordered to kill each other or risk being killed themselves.
Gunn announced in March that he tapped Australian director Greg McLean to helm “The Belko Experiment” from Gunn’s script. Gunn is producing with Peter Safran.
Gunn is on board to produce and direct Marvel-Disney’s “Guardians of the Galaxy 2,” which has been slotted for May 5, 2017.