The Three Doctors (Doctor Who) the Third Doctor (Jon Pertwee) for help when Omega drains their civilisation's power. The serial opened the tenth anniversary year of the series, and features the first three Doctors all appearing in the same serial. This makes it the first "Doctor Who" story in which an earlier incarnation of the Doctor returns to the show. A superluminal signal is sent to Earth, carrying with it an energy blob that seems intent on capturing the Doctor. The homeworld of the Time Lords is also under siege, their power being drained through a black hole. Trapped themselves, and desperate to send help,
Regeneration (Doctor Who) out that the males and females of the species collectively refer to themselves by a male title. From "Twice Upon a Time" onward, Jodie Whittaker portrays the Thirteenth Doctor, the Doctor's first female incarnation. Female Doctors were previously explored in spin-off productions; Joanna Lumley appeared as a satirical version of the Thirteenth Doctor in the 1999 Comic Relief special "The Curse of Fatal Death". Arabella Weir also played an alternate Third Doctor in the "Doctor Who Unbound" Big Finish episode "Exile". Neither portrayal is typically considered to be within the show's main continuity. Spin-off media have also depicted more drastic