After word got out that Vin Diesel would be voicing the treelike alien superhero Groot in the upcoming Guardians of the Galaxy, people began to clamor over who would voice the trigger-happy Rocket Raccoon. Latino Review first reported that Marvel was interested in Bradley Cooper for the role, and the Wrap is now saying that the actor is in early talks for the part. No word on whether it helped that, like Raccoon, Cooper has two Os in it.