Doctor Who is a long-running British
science-fiction television series that began in 1963. It stars its protagonist,
the Doctor, an alien who travels through time and space in a ship known as the
TARDIS, as well as their travelling
companions. When necessary (usually due to impending death or severe injury) the Doctor is able to undergo a process known as "regeneration", completely changing the Doctor's appearance and personality while maintaining their memories. This renewal process allows the Doctor (and other Time Lords) to live extremely long lives that span millennia. Throughout their travels, the Doctor often comes into conflict with various
alien species and antagonists.
Characteristics ")The Time Lords live on a planet known as Gallifrey, a yellow-orange planet. A large city called the Capitol resides on the planet, where a large number of Time Lords live. All Time Lords are part of the species known as Gallifreyans, but not every Gallifreyan is a Time Lord, though many involved with the show have interchangeably referenced the Time Lords being either a
race or a
species. In this respect, it is simpler to view the Time Lords as an elite class of Gallifreyans. Time Lord society is largely present within the Capitol, also called the Citadel, with the land outside of the city being a desolate wasteland. The Capitol contains the Academy, where young Gallifreyans are raised as Time Lords. while those who become Time Lords tend to be from "ruling houses", which are implied to be at the top Gallifreyan society. regenerates into the
Fifth Doctor (from
Logopolis, 1981).|leftThe term "Time Lord" tends to refer to a male Time Lord, while "Time Lady" is used to refer to a female Time Lord; despite this, the term Time Lord has also often been used as an overarching term to refer to both sexes of Time Lord. Time Lords and human beings look alike, but differ in that they have several physiological differences, with Time Lords having two hearts. Time Lords, usually upon severe injury or impending death, have the ability to "regenerate", during which they are healed from their mortal injuries but have their physical appearances and personalities changed in the process (though their memories remain intact). Time Lords are normally capable of regenerating twelve times, making for a total of thirteen lives in one Time Lord's life. However, this limit has been circumvented in numerous instances, such as with the Doctor and also with his arch-enemy
The Master, both of whom have lived well beyond their standard twelve regenerations. Another process that exists, introduced in 2023 episode "
The Giggle", is known as bi-generation, in which the Time Lord splits into two distinct bodies when regenerating (the current incarnation remains while a new body also emerges), though both are the same Time Lord. Time Lords also have some level of psychic powers, as well as the power of
hypnosis and a "respiratory bypass system" which allows them to avoid being strangled. Time Lords are also capable of disguising themselves as humans using a device called a
Chameleon Arch. The Time Lords were originally members of a species known as the Shobogans who were genetically altered with the
DNA of a being known as the Timeless Child, a being that later would become the Doctor. This granted Time Lords the ability to regenerate. Later, a Time Lord named Rassilon would work with another Time Lord named Omega to create the first
time travel spaceship, harnessing the power of a star going
supernova to fuel the device. Though it succeeded, Omega disappeared during the incident and was presumed dead, though he actually survived and passed into an inescapable
anti-matter realm. Rassilon harnessed the
nucleus of the resulting black hole to provide the energy that powers time travel, resulting in Rassilon receiving praise for Omega's work. After a later interaction with a species known as the
Minyans resulted in highly negative consequences, the Time Lords adopted a policy of non-interference with alien species, meaning the Time Lords would no longer directly interact in the affairs the universe and could only observe it from afar. In the past, however, they also established a faction known as the Division to interfere with history when needed, though the Division split off to become separate from the Time Lords entirely, often outsourcing their work to other alien species, such as the
Weeping Angels and
Lupari.
Appearances Classic series The
First Doctor steals a
TARDIS, one of the
time-travel ships the Time Lords use, and flees Gallifrey with his granddaughter
Susan Foreman sometime prior to the events of the series. Subsequently, the Doctor, during his travels, encounters and thwarts many conflicts throughout history. Eventually, in the 1969 serial
The War Games, during an incident in which a group known as the War Lords capture humans from throughout time and space, the
Second Doctor is forced to contact the Time Lords to resolve the situation. The Time Lords deal with the War Lords, but subsequently put the Doctor on trial for his interference throughout time and space. After showing them how he has stopped evils during his travels, the Time Lords decide to force him to regenerate and exile him to Earth, where the Doctor has spent a significant amount of time during his travels. The Doctor also comes into conflict with another renegade Time Lord,
the Master, who repeatedly has his schemes thwarted by the Doctor, and would repeatedly feature as a recurring antagonist. The Time Lords eventually contact the first three incarnations of the Doctor during 1972 serial
The Three Doctors in order to defeat Omega, who has returned to the universe and is attempting to get revenge on the Time Lords for seemingly abandoning him. After Omega is seemingly destroyed, the Time Lords revoke the Third Doctor's exile, allowing him to travel freely again. He is later sent on a mission by the Time Lords during the events of the 1975 serial
Genesis of the Daleks, where they request the Doctor to go back in time to the
Daleks' creation in an attempt to prevent it. The Time Lords again appear in the 1983 serial
Arc of Infinity, during which the
Fifth Doctor helps stop another attempt by Omega to return from his
anti-matter universe. The Time Lords eventually again capture the Doctor and put him on trial in
The Trial of a Time Lord. The Sixth Doctor debates against the prosecutor known as
the Valeyard, who is revealed to be a dark incarnation of the Doctor from his future. The Valeyard has manipulated the trial to try and get the Doctor's remaining regenerations, and flees into the Time Lord information repository known as the Matrix in an attempt to escape. The Doctor stops both him and the Master, and is released by the Time Lords as thanks for his help in stopping them. Though the Master was also revealed to have escaped the war, the Time Lords as a race did not physically re-appear until "
The End of Time" (2009-2010), in which Rassilon, during the final days of the Time War, attempts to destroy time and space as a whole to make the Time Lords become the final living race in the universe. Though Gallifrey is briefly able to escape the war, the
Tenth Doctor stops Rassilon, sending the Time Lords back into the war. During the 2013 50th anniversary special "
The Day of the Doctor", the War Doctor meets his future incarnations, the Tenth and
Eleventh Doctors, and the three are able to work together to save the Time Lords from the last day of the war, sending the Time Lords and Gallifrey into a
pocket universe. The Time Lords attempt to return the universe during the events of the 2013 episode "
The Time of the Doctor", needing the Doctor to speak his name into a crack in time to know if it's safe to return. Species from across the universe lay siege to the planet Trenzalore to stop the Doctor from speaking his name; though the Eleventh Doctor, on his final regeneration, does not intend to speak his name, he stays to defend the town of Christmas on the planet, as it will be destroyed by the invading forces if he is to leave. After hundreds of years of defending the planet, he is about to die; the Time Lords gift the Doctor more regeneration energy for a new regeneration cycle, allowing him to survive and defeat an invading Dalek fleet. The Time Lords subsequently return to the universe, with the
Twelfth Doctor eventually making it back to Gallifrey in "
Hell Bent" (2015), during which the Doctor exiles Rassilon and uses Time Lord technology to pluck his companion
Clara Oswald from moments before her death to save her life. Gallifrey is destroyed again by the Master in the 2020 episode "
Spyfall", with the Master exterminating all Time Lords in the universe off-screen with a "genetic explosion". The Master later converts the Time Lords into mechanical cyborgs known as
Cybermen in the 2020 episode "
The Timeless Children". These Cybermen, dubbed "Cybermasters", have the ability to regenerate, unlike regular Cybermen. The Cybermasters re-appear during the events of the 2022 special "
The Power of the Doctor", and are seemingly all killed during the episode. Tecteun attempts to orchestrate a wave of
anti-matter known as the Flux to destroy the entire universe, allowing her and the Division to escape to another reality away from the Doctor. with the Doctor later defeating them and stopping the Flux wave.
In spin-off media Many pieces of spin-off media focus on Gallifrey, particularly in terms of the Doctor's origins on the planet. However, many of these accounts are contradictory and do not align with events portrayed in other media: For example, accounts of the Doctor's true name that they used on Gallifrey are never consistent and often are different between different forms of media. Several elements of the Time Lords' history are present across spin-off media, but are not always present in the main show. One major element was the concept of looms, which are devices used by the Time Lords to reproduce after being rendered
infertile. These have been used in multiple forms of media, such as comics and novels. Another is the character of Irving Braxiatel, the Doctor's brother, who acts as a recurring character across multiple spin-off series, including in media focusing on the character of
Bernice Summerfield. Other concepts that originate in spin-off media, such as the domed citadel of the Time Lords that debuted in comic strips, would later be adapted and made canon to the television series. The crossover event depicts Time Lords during the Dark Times, with the Daleks and many incarnations of the Doctor becoming involved in the conflict.
Time Lord Victorious was depicted across multiple pieces of spin-off media, including novels, audio dramas, comic strips, and real-world immersive events.
Novels The 1997
Virgin New Adventures novel
Lungbarrow depicted an execution of a planned storyline for the Classic series before its cancellation; the novel revealed the Doctor to secretly be a mythical figure in Time Lord society known as
the Other. This conflicted with other novels published by
BBC Books at the time, which followed the idea of the Doctor being half human.
Audio The
Gallifrey audio drama series produced by
Big Finish Productions depicts Romana returning to Gallifrey and assuming the position of President, working alongside the character
Leela to improve Time Lord society for the better while dealing with political drama and terrorist attacks. Several audio dramas focusing on the War Doctor also reveal more about the events of the Time War, Another series, dubbed ''Susan's War'', focuses on Susan's role in the Time War. ==Creation and development==