When I had everybody on screen, you really saw an uglier side of all these guys, because they would not stop chatting. Giggle giggle giggle, chat chat chat. Literally the only time I raised my voice when we were filming was because these guys would not shut up and we had to roll. Don’t get me wrong - you would see them standing next to each other going “Is this costume cooler? Are his muscles bigger?” But every single one of them was rooting for the other
Joss Whedon talks about the cast of The Avengers (Empire Magazine, March 2012)