character has ranked highly in numerous 'best companion' polls. After leaving as a series regular, Piper experienced success in other high-profile roles as an actress which has been partly attributed to her performances in Doctor Who. Appearances Television Rose is introduced in the eponymous premiere episode, "Rose", of the 2005 series. She is saved from an Auton attack by the mysterious Time Lord the Doctor (Christopher Eccleston), and assists him in preventing an invasion of Earth. Subsequently, the Doctor invites Rose to be his travelling companion, taking her to the end of the world and tampering her mobile so she can remain in contact with her mother Jackie (Camille Coduri), and boyfriend Mickey Smith (Noel Clarke) while time-travelling in "The End of the World". In their travels through time and space, Rose learns the importance of not tampering with history, when in "Father's Day", she attempts to save the life of her father Pete Tyler (Shaun Dingwall), who had died when she was a baby. Throughout their journeys, she and the Doctor are haunted by two mysterious recurring words: "Bad Wolf". Rose, the Doctor, and new companion Captain Jack Harkness (John Barrowman) come to understand the meaning of this phrase in "Bad Wolf", when they encounter an unstoppable army of Daleks on the space station Satellite 5, which first appeared in "The Long Game". To return to the Doctor after he sends her home to Earth in series finale "The Parting of the Ways", Rose tears open the console of the Doctor's time machine, the TARDIS, and becomes suffused with the power of the time vortex. Returning, she uses her power over the infinity of time and space to spread the words "Bad Wolf" over its entirety, then saving the universe from the Dalek invasion. Rose resurrects Jack, who died from Dalek fire, and destroys the Dalek fleet before the Doctor drains the energy out of her to save her life from its harmful effects. Rose is horrified as the Doctor appears to die and regenerates into a new man (David Tennant), who proceeds to take the TARDIS and a terrified Rose to Earth, abandoning Jack on Satellite 5. The new Doctor and Rose arrive on Earth on Christmas Day, where he passes out from the strain of regeneration in the midst of a Sycorax invasion in the 2005 Christmas special "The Christmas Invasion". Having woken up and saved Earth,