-- Kevin Feige confirms that Hulk and Hawkeye will play big roles in The Avengers: Age of Ultron (x)
Joss Whedon on the Tony/Bruce relationship (The Avengers Blu Ray Commentary)
3. When the Hulk is smashing Loki up and down, they inserted Tom Hiddleston’s real agonized face.
This took a lot of shooting of Hiddleston looking pained, so they could paste it into the digital Loki. “We’re not inventing how he looks when he’s in pain,” says Chu. “I had to get behind [Tom Hiddleston] and shake him violently,” so they could capture his real expressions. (He mimes violent shaking.) “I did it so long, he started laughing. So we didn’t use that portion.” And for one brief shot where Loki is just hanging upside down, they still had to cut Loki’s face from somewhere else and stick it in, flipped the opposite direction.
“When we first heard about the thing where Hulk slams Loki up and down,” says Smith, “it’s like that’s a bold thing to do. It’s very cartoony. It’s almost Hanna-Barbera.” But when you watch it in the theater, it totally works, and it’s the way we’ve always wanted to see the Hulk. And that’s all down to Joss Whedon getting why these characters work, says Smith. In that shot, Whedon really wanted the Hulk’s face to be totally deadpan, rather than making a lot of grimaces or weird facial expressions — and that’s a huge part of why it works. “Because Hulk is just like, ‘Yeah, I’m going to smash you into the ground, and it’s not a big deal to me.’”