Anthony Mackie, the actor behind the role of Falcon in the Marvel Cinematic Universe, did not know that he was an Avenger until he actually saw 'Avengers: Age of Ultron' in theaters. Believe it or not, it's true. Mackie explained in an interview with Yahoo!: "When we were at the premiere, I was like 'Cool, I?m with my son and he gets to see his daddy in two scenes in The Avengers.' By the end of the movie I turn around and they?re like, 'Avengers Assemble!? I?m like, 'Holy [cow], I?m an Avenger!'" 'Captain America: Civil War' opens in theaters May 6th, where the Falcon is assuredly an Avenger.