Pierrot (The Silver Turk)

 was one of the wooden puppets created by Gramm using Cyber-Technology. Johan Drossel used him to perform simple tasks like putting the Eighth Doctor into the cellar.

Pierrot's functioning ceased together with that of its creator, Gramm, on 12 September 1873. All remnants of the Cyber-Technology were destroyed by the Eighth Doctor. (AUDIO: The Silver Turk)

Behind the scenes
Judging by the name, the appearance of Pierrot was not based on any particular person. Rather it was based on a male from the. This made him a likely candidate for performing in Marionettenburg.