The mask I mention is the one used in the beginning of the film, and it looks to me like a bald Emmett Kelly. Today I found out that… Not sure. But it could be. I'm sure with each one they used it was based on some thing, or some one. People don't realize just where a lot of the things that are used come from. IE, George Lucas with Star Wars, the lasers are from a line stretched and hit with an object. Chewie, was many different dogs barking and growling. So, I'm sure it could be Emmet Kelly not saying it is. But, it easly could be. Have a great day.