The original concept design for Woody in Toy Story is the stuff of nightmares. He looks drunk here.
This concept drawing from Steve Johnson and Lou Fancher shows Woody with the slits at his jaw to give him that ventriloquist’s-dummy look. “But as we moved into production,” Mr. Eggleston said, “looking at those slits became a little bit unappealing after a few minutes. So we decided, why not make him a pull-string doll?”
Read more about how Woody was fleshed out by Pixar.