The Player (The Plague of Dreams)
From Tardis Wiki, the free Doctor Who reference
The Player was a renegade Time Lord who tried to hide from the Last Great Time War.
He encountered the First Doctor after his timeline had been altered by the Daleks so that he would not regenerate in the South Pole. The Player helped the Doctor get back on the right path. He knew then that he would have to fight on the front lines of the War. (AUDIO: The Plague of Dreams)
