ventriloquist

John Boehner is less the Speaker than a battered ventriloquist for the Tea Party klatch in his caucus.
Lessons From the Fiscal Cliff: the Political Fallout|Robert Shrum|January 4, 2013|DAILY BEAST
He becomes a ventriloquist, and gets laughs only when the dummy pees on him.
YouTube's Rising Cartoon Star|James Gavin|September 3, 2010|DAILY BEAST
When the ventriloquist is a voice of experience and not of love, words are no longer material for heartfelt expression.
Sex Advice from Cyrano|Ben Crair|July 23, 2009|DAILY BEAST
Yet there are many onlookers who, by a ventriloquist, can be made to believe that the picture speaks.
Ancient Faiths And Modern|Thomas Inman

Frank was a very good amateur ventriloquist, although he seldom practiced the art.
Frank Merriwell's Races|Burt L. Standish
Being a skilled ventriloquist, he was the author of the dismal groans and the mysterious voice that had so alarmed the boys.
Frank Merriwell's Chums|Burt L. Standish
She was something of a ventriloquist, which made these accomplishments especially delightful.
At Boarding School with the Tucker Twins|Nell Speed
The voice drew near like the ventriloquist doing the trick of the man in the cellar.
The Hero of the People|Alexandre Dumas

Origin of ventriloquist