hands as well." According to Jackman, executive producer Spielberg "actually said to Shawn, 'You should really have real elements where you can.' ... Basically if they're not walking or fighting, that's a real robot." Levy added that Spielberg gave the example of Jurassic Park, where Winston's animatronic dinosaurs "got a better performance from the actors, as they were seeing something real, and gave the visual effects team an idea of what it would look like." As Real Steel was not based on a toy, Meyer said that "there was no guideline" for the robots, and each was designed from scratch, with an attempt to put "different personality and aesthetics," according to Levy. In Atom's case, it tried to have a more humanizing design to be an "everyman" who could attract the audience's sympathy and serve as a proxy to the viewer, with a fencing mask that Meyer explained served to show "his identity was a bit hidden, so you have to work harder to get to see him." Executive producer Robert Zemeckis added that the mask "became a screen so we can project what we want on Atom's face." Damage was added to the robots' decoration to show how they were machines worn out by intense battles. For scenes when computer-generated robots brawl, "simulcam" motion capture technology, developed for the film Avatar, was used. As Levy described the process, "[Y]ou're not only capturing the fighting of live human fighters, but you're able to take that and see it converted to [CGI] robots on a screen instantaneously. Simulcam puts the robots in the ring in real time, so you are operating your shots to the fight, whereas even three, four years ago, you used to operate to empty frames, just guessing at what stuff was going to look like." Boxing hall-of-famer Sugar Ray Leonard was an adviser for these scenes and gave Jackman boxing lessons so his moves would be more natural. Release Real Steel had its world premiere on September 6, 2011, in Paris at the Le Grand Rex. The film had its United States premiere on October 2, 2011, in Los Angeles at the Gibson Amphitheatre. It was commercially released in Australia on October 6, 2011, followed by the United States and Canada on October 7, 2011. Its U.S. release, by Walt Disney Studios Motion Pictures, was originally scheduled for November 18, 2011, but it was moved earlier to