"So we had some different challenges: we had skin texture we had to work out, we had to grow hair off of characters' heads and we had to find an animation style that was still fun and loose and had some caricature to it, but could portray humans in a believable way. The Incredibles was a definite inspiration for this. It was eye-popping to me, and certainly part of my education in 3D and how to do character animation with all of its subtleties.One really interesting technique that we used is occlusion. It creates shadows based on the proximity of one object to another. It's a way to avoid that glowy feel that computer animation has or the way mouths look like they're illuminated from inside. Occlusion, because it's a closed space in there, will darken that mouth immediately. Then when we add our texture and lighting on top of that, you have a bit more real look to the images you're creating. It's that extra layer of believability that computer animation is so great at."