ventriloquist

noun

1. A person, especially an entertainer, who practices ventriloquism.

   “Most ridiculous is the discomfiture which attends the opponents of predication, who, like the ventriloquist Eurycles, have the voice that answers them in their own breast.”

   “"Oh, I am a ventriloquist," said the little man. "I can throw the sound of my voice wherever I wish, so that you thought it was coming out of the Head. […]"”