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There is some evil in all of us, Doctor – even you. The Valeyard is an amalgamation of the darker sides of your nature, somewhere between your twelfth and final incarnation, and I may say you do not improve with age.
~ The Master to the Sixth Doctor about the Valeyard.

The Valeyard is the main antagonist of the 14-part Doctor Who serial "The Trial of a Time Lord". He is a lawyer and a future incarnation of the Doctor himself.

He was portrayed by Michael Jayston.


Being the embodiment of all dark sides of the Doctor, the Valeyard is one of the few villains who can match the Doctor's intelligence. His urge to prevent his own death at any possible cost is very similar to the motives of the Master.


As the Valeyard doesn't have many regenerations left, he wants to get the Doctor accused in a trial for the death penalty. However, the Master appeares in the trial to point out that the Valeyard is actually the Doctor himself, which makes him flee the trial into the Matrix, where the Doctor follows him. In the end the Doctor can evoid the death sentence, but also the Valeyard is able to escape. He is never seen again (except in books).


  • In the fifth season of the series' revival there has been another villain who is a mix of the darkest sides of the Doctor: The Dream Lord.