The Viper was built for the Kung Fu Panda interstitials and commercials such as fast food tie-ins and the video game advert. When I was first tasked to rig her, I thought rigging what was basically a tube would be no problem. Boy was I mistaken. She had to squash and stretch, and twist and grab objects with her tail, and follow a path and be efficient... it took me over fifteen false starts before figuring out how to fit everything together. I also had a lot of cleanup duties on the other seven characters.