Very few must know that the character of Rocket the Raccoon, in the Guardians of the Galaxy films, is played by two different actors together in different magnitudes. One is actor Bradley Cooper, who lends his voice to the mutated mammal.
The other is Sean Gunn, brother of director James Gunn, who performs as Rocket in front of the camera and during the principal photography.
But now the question arises, why two different actors for one particular character? Here is what the director James Gunn himself has to say about the matter.
"Sean Gunn is not a stand-in. He is a motion reference actor. That means we film everything Sean does on set as Rocket. We film it. I don't stop doing takes of him until we get the performance right and then we use that performance as a basis for much of Rocket's acting." Said James Gunn.
"And he does a fantastic job in that role. He knows it. He understands it. And also very important, Sean is able to physically do something most actors aren't able to do, which is waddle around on all fours." The director added.
"He's always been an incredibly limber guy that can to do a lot of strange physical things. And the fact that he's able to waddle around on his legs all day long at the exact height of Rocket is quite a feat and quite difficult." Explained James Gunn.