Previous Doctor (Exile)
From Tardis Wiki, the free Doctor Who reference
In a parallel universe, the Doctor committed suicide by jumping off a pylon to escape the Time Lords, regenerating into a woman. In her new incarnation, the Doctor travelled to Earth to hide. He would appear in the mirror to mock The Doctor's current situation and ask her to sober up. He had a strange obsession with The Quarks, believing them to be the greatest threat of the universe. (AUDIO: Exile)