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,
The Master (Doctor Who) The Master (Doctor Who) The Master is a recurring character in the British science fiction television series "Doctor Who" and its associated spin-off works. The character is a renegade alien Time Lord and the archenemy of the title character the Doctor. The Master has been played by multiple actors since the character's introduction in 1971. Within the show, this is varyingly explained as the Master taking possession of other characters' bodies, or as a consequence of regeneration, a biological attribute allowing Time Lords to survive fatal injuries. The role was originated by Roger Delgado in 1971, who portrayed the Master