Clockwork robot

Clockwork robots were a type of robots, often androids, based on clockwork technology. Several civilisations including humans and Katurians developed fully autonomous clockwork robots.

The Second Doctor encountered clockwork soldiers in the Land of Fiction. (TV: The Mind Robber)

The Seventh Doctor created miniature clockwork people for his model train set. (PROSE: Model Train Set)

The Ninth Doctor faced off against Katurian Clockwork Mechanicals in London in 1924. (PROSE: The Clockwise Man)

in the 51st century, the Tenth Doctor had to outwit the surviving crew of the SS Madame de Pompadour consisting of Clockwork Droids. (TV: The Girl in the Fireplace) Later the Twelfth Doctor met the Droid crew of her sister ship SS Marie Antoinette in London in the 1890s. (TV: Deep Breath)

The Twelfth Doctor took apart his radio in the TARDIS to make a clockwork squirrel. (TV: Under the Lake) Whilst explaining the Bootstrap Paradox, the Doctor sat the clockwork squirrel on top of his amplifier. (TV: Before the Flood)

The Veil was a clockwork robot inside of the Twelfth Doctor's confession dial. (TV: Heaven Sent)