Rumors about Cooper’s involvement have swirled around the internet for a while, thus Marvel confirming Cooper’s role.
The Academy Award Nominee will lend his voice and joins the cast which includes Parks and Recreation Chris Pratt, Zoe Saldana, Benicio Del Toro, John C. Reilly, Lee Pace, and Doctor Who’s Karen Gillan.
With Cooper’s official announcement made by the studio, one role which has not been confirmed is that of the sentient tree, Groot. Vin Diesel has been rumored to be negotiating for the role, though nothing has been confirmed yet.
Guardians of the Galaxy tells the story of a jet pilot, played by Pratt, who ends up stranded in space and unites with a diverse team of aliens who must try to defeat cosmic threats.
A clip of the movie was shown at this year’s Comic Con with favorable reactions from the audience.
Guardians of the Galaxy will be released on August 1, 2014.