20 Amazing Marvel Cinematic Universe Cameos You Never Noticed

6. Harry Dean Stanton (The Avengers)

Joss Whedon has confessed to writing ten pages of dialogue for this scene between Bruce Banner and a security guard who finds him naked after he crashes to Earth as the Hulk, but the brief exchange between the two in The Avengers was more than memorable enough. Harry Dean Stanton of course had a pivotal role in Alien, and him asking the befuddled Bruce whether or not he was "some kind of alien" was no doubt a nod to his role in that.