 The Ninth Doctor first appears in the episode " Rose " where he rescues 19 @-@ year @-@ old <unk> Rose Tyler ( Billie Piper ) from an Auton attack in the department store where she works . After Rose helps the Doctor defeat the Nestene Consciousness ( living plastic ) , he invites her to travel with him in the TARDIS . On their first trip he takes her to witness the destruction of planet Earth in the year five billion . It is revealed that the Doctor 's own species , the Time Lords , have been destroyed and the Doctor is the last of his kind . Following from this they visit Cardiff in 1869 where they encounter author Charles Dickens , of whom the Doctor claims to be a big fan . When faced with a near death situation , the Doctor tells Rose that he was glad to have met her . In taking Rose home the Doctor accidentally returns to earth 12 months after they left . Because of his actions he is treated like an Internet predator by Rose 's mother Jackie ( Camille Coduri ) and Rose 's boyfriend Mickey ( Noel Clarke ) has become Rose 's murder suspect . After Mickey helps the Doctor and Rose defeat the Slitheen by firing a missile at their base at 10 Downing Street , the Doctor offers Mickey a place in the TARDIS with them but he refuses . In the episode " Dalek " the Doctor encounters a Dalek , though he had believed the race to be extinct as the " Time War " between the Time Lords and Daleks concluded with the mutual annihilation of both races — an event for which the Doctor himself was responsible . The Doctor tortures the surviving Dalek and at the end of the episode attempts to kill it in cold blood . He refrains once Rose calls him out on this . 
