FXGuide talks to The Avengers' visual effects supervisor Janek Sirrs and details the VFX work done on the superhero movie. Says Sirrs, "In terms of the characters most of the R&D work had already been done for us, and we could see what we liked or disliked, based upon the previous Marvel pictures. I’d already had direct experience with Iron Man from the last show, and the relevant folks were on hand to discuss Thor, Captain America, etc. It was more a question of what direction we wanted to take those characters in. Hulk and the aliens were the tricky items as they really had to be designed from the ground up so we started them as early as possible in pre-production.”
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