The Celestial Toymaker
Attired in the dress of a Chinese Mandarin, The Celestial Toymaker was in reality an eternal being of great mental and physical powers who could not be destroyed. The Toymaker's passion was luring unwitting travelers to his realm where he forced them to play his games -- if they lost, they then became his playthings. The Toymaker challenged the Doctor, Steven and Dodo to a series of such deadly games, which they won. However, the Doctor discovered that, to make the last, winning move in the Toymaker's Trilogic Game, would condemn them all to oblivion. The Toymaker was outwitted when the Doctor ordered the move using the Toymaker's voice, thereby freeing the TARDIS allowing them to escape.