When MTV News spoke with Tom Hiddleston during Comic-Con, the actor explained the basis for the trickster god's tendencies in a brawl, and shared a story of how the main characters' climactic fight led to one of the actors spewing a real-life "river of blood."
"I tried to find a physicality for Loki that was very different from Chris as Thor," Hiddleston told MTV News. "He's such a big guy and he does so much work on his body, and it was brute strength and a really raw masculinity that would wield this hammer with an enormous power."
"If he was the rock, I wanted to be like the wind, dancing around and you could never pin me down," he explained. "I worked with the stunt guys on this almost balletic fighting style. You'd throw a punch at Loki but he's ten steps ahead of you and he wouldn't be there."
Without spoiling too much abuot the film's plot, Hiddleston shared a story from the climactic fight between Thor and Loki that illustrated how seriously the duo took their characters' brawl.
"There's a huge fight at the end — that's not giving too much away to say that it comes to a head," he said. "We rehearsed it a lot [and] Ken [Branagh] was really happy. After that day of shooting, he said we definitely have the 'Bourne Ultimatum' version of the two boys from Asgard."
"There was this move where I had to spear [Hemsworth] and he'd catch the spear . . . and then just pop the elbow up into my face," he continued. "I'd been doing this quite nifty reaction — like great boxing closeups where you see someone get punched in the nose. On the fourth take, we got a little close, and in that split second, I thought, 'I've got too close. I'm going to get nailed.'"
And get nailed he did, with Hiddleston taking a full-on shot to the nose.
"[Hemsworth] just cracked me in the nose, and I was so stilled by the force of this thing," he said. "Chris had huge arms at this point. His arms were the size of my head."
"He had to throw me across the room, and you can hear him going, 'Sorry, dude,' and then slinging me across the room," laughed Hiddleston. "Rivers of blood were coming out of my nose."
"Thor" is scheduled to hit theaters May 6, 2011.