Rose Tyler, also known as Bad-Wolf Girl (PROSE A Better World) and Calypso, (PROSE The Jack Who Stole Christmas) was a companion of the Doctor.
Jenny and Kevin stopped Rose Tyler coming through a tear from Void the Void by creating a space-time event complicated space-time event, as Jenny believed that Rose could destroy all universes. Kevin could feel that Rose had lost someone, and felt her pain. However, the complicated space-time event didn't close the tear, just relocated it, and Rose Tyler came through, searching for the Doctor to warn him of the end of the universes. (PROSE: Kevin and Jenny Take On The Universe(s))