[Oogie_Claws]

As a character at Magic Mountain, i know for a fact that those costumes would be problems. People sticking their fingers in eyes and mouths, plus the rowdy kids. It rarely happens at Disneyland, but those things would be heavy and expensive, and if a character is attacked it would be expensive machinery to fix and the cast member could be hurt. As for the voice changers, they exist. DCA's Roz in Monster's Inc. used to work at Magic Mounatin and was a friend of my boss. He uses a voice changer to say all of the different phrases he says to the guests.