20 Amazing Marvel Cinematic Universe Cameos You Never Noticed

8. Sean Gunn (Guardians Of The Galaxy)

Sean Gunn is the brother of Guardians Of The Galaxy helmer James, but his small role in the movie as Yondu's right hand man Kraglin was more than just a family favour. He played a pivotal role during shooting by serving as the voice and performer of Rocket Raccoon, crawling around the set in a tight green spandex outfit as a reference point for the special effects team and as someone for the rest of the actors to bounce off during shooting.