Sisi (puppet)

 was a puppet of the Empress Elisabeth of Austria.

She was created for  Puppet Johan Drossel by Gramm using Cyberman technology. Exploiting Alfred Stahlbaum's obsession with the Empress, Drossel instructed the puppet empress to suggest Stahlbaum to join forces with him again. Not fooled by the performance, the  Eighth Doctor proved to Stahlbaum that this was not the real empress by breaking her head off. (AUDIO: The Silver Turk)