Bradley Cooper is the latest actor to join the cast of a highly anticipated superhero movie.

Cooper will be voicing Rocket Raccoon in Guardians of the Galaxy, according to an official press release by Marvel on Monday. Rocket Raccoon, a genetically engineered raccoon with talent in archery and military tactics, will join forces with Peter Quill (Chris Pratt), Gamora (Zoe Saldana) and Drax (Dave Bautista) on their quest to save the galaxy.

Cooper had previously been rumored to play Rocket Raccoon, but the reports were unconfirmed. This is Cooper's first venture into voice acting. Though the raccoon will be animated through CGI technology, the Guardians of the Galaxy film will be in live-action.

The 34-year-old actor was nominated for an Oscar in 2013 for his performance in the comedy Silver Linings Playbook. He has spent most of his career in comedies (The Hangover trilogy) and thrillers (Limitless) and moved into the realm of action when he starred in 2010's The A-Team. He will be seen next in the historical drama American Hustle, which comes out in December 2013. The film already has an all-star cast, with Cooper joining Pratt, Saldana and Bautista in addition to Glenn Close, Djimon Hounsou, Benicio del Toro and John C. Reilly.

The plot synopsis for this year's thriller stated that a U.S. pilot (Pratt's Peter Quill) goes on the run with a group of ex-cons who own something that is highly desired in the universe. Quill finds himself in the middle of a universal conflict.

 Guardians of the Galaxy is scheduled to be released in theaters on Aug. 1, 2014.