- You may be looking for the wooden puppet of the Eighth Doctor.
The Silver Doctor was an automaton that Alfred Stahlbaum and his wife Mitzi used in their performances.
He was touted as being able to sing, play the trumpet and reveal the darkest secrets of the future. He spoke with the voice of the Eighth Doctor. His name was a combination of the names of the Silver Turk, with whom Stahlbaum performed earlier, and the Doctor. (AUDIO: The Silver Turk)