The Valeyard (An Unearthly Power)
One form of the Valeyard had the appearance of an adult Susan Foreman. She claimed to be one of several faces which the Valeyard could sometimes change between due to being stuck in the cycle between regenerations. By this account, the Valeyard was a psychic entity manifested from the Doctor's darker nature, (GAME: An Unearthly Power [+]Loading...["An Unearthly Power (game)"]) suggesting that the Dream Lord was another of their possible faces. (TV: Amy's Choice [+]Loading...["Amy's Choice (TV story)"])
The Valeyard used a photon screwdriver.
The Valeyard attempted to gain the ability to regenerate by absorbing the anti-temporal matter brought to Brittia by the First Doctor. She was stopped by the Division and several incarnations of the Doctor, who rewove her energy into the outer layer of the Taaron Ka. (GAME: An Unearthly Power [+]Loading...["An Unearthly Power (game)"])
