While no deal is in place, a formal offer has been made to Cooper and talks are said to be ongoing between Marvel and CAA.
Vin Diesel is also rumored to join the cast as the voice of Rocket Raccoon’s close friend Groot, an extraterrestrial tree-like creature.
Marvel has long viewed “Guardians” as its own “Star Wars,” featuring a number of setpieces in outer space and alien creatures.
Rocket Raccoon, a key member of the “Guardians” fleet, appeared onscreen in Disney’s D23 Expo earlier this month in Marvel’s teaser and promises to be a more realistic looking version of the genetically modified character.
Cooper can next be seen in David O. Russell’s “American Hustle,” which opens Dec. 25.
News of his casting was first reported by Latino Review.