Doctor Who show, as the story begins anew with each companion and she undergoes more change than the Doctor. The primary companions of the Ninth and Tenth Doctors were Rose Tyler (Billie Piper), Martha Jones (Freema Agyeman), and Donna Noble (Catherine Tate) with Mickey Smith (Noel Clarke) and Jack Harkness (John Barrowman) recurring as secondary companion figures. The Eleventh Doctor became the first to travel with a married couple, Amy Pond (Karen Gillan) and Rory Williams (Arthur Darvill), whilst out-of-sync meetings with River Song (Alex Kingston) and Clara Oswald (Jenna Coleman) provided ongoing story arcs. The tenth series introduced Pearl Mackie as
The Doctor (Doctor Who) Ninth Doctor already regenerated and fully stabilised, with no explanation given. In his first appearance in "Rose" (2005), the Doctor looked in a mirror and commented on the size of his ears, suggesting that the regeneration may have happened shortly prior to the episode, or that he has not examined his reflection recently. Some draw the conclusion that the Ninth Doctor's appearances in old photographs, without being accompanied by Rose, may suggest that he had been regenerated for some time, but these appearances could have occurred afterwards. Russell T Davies, writer/producer of the new series, stated in "Doctor Who Magazine"