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{{Infobox Individual
{{Infobox Individual
|name = K9 Mark I
|alias      = K9 Mark 1
|alias = [[K9]]
|image       = K9 Mark I 2.jpg
|image = K9 Mark I 2.jpg
|species     = Robot
|species = Robot
|origin     = [[K4067]]
|origin = [[K4067]]  
|first       = The Invisible Enemy (TV story)
|first = The Invisible Enemy (TV story)
|appearances = [[K9 Mark I - list of appearances|'''''see list''''']]
|appearances = [[K9 Mark I - list of appearances|'''''see list''''']]
|voice actor = John Leeson}}{{K9s}}
|voice actor = John Leeson
'''K9 Mark I''' was a portable computer originally owned by [[Professor]] [[Marius]], who considered the [[robot]] [[dog]] his "best friend". Together, they conducted advanced medical research at the [[Bi-Al Foundation]] for an unknown length of time. When the [[Fourth Doctor]] and [[Leela]] arrived at the Foundation, Leela quickly became enamoured of the dog. The professor eventually gave the dog to the time travellers as thanks for defeating [[The Swarm (The Invisible Enemy)|The Swarm]]. ([[TV]]: ''[[The Invisible Enemy]]'')
}}{{K9s}}
{{Big toc}}
'''K9 Mark I''', or '''K9 Mark 1''', ([[TV]]: ''[[Regeneration (TV story)|Regeneration]]'') was a portable [[computer]] originally owned by [[Frederick Marius|Professor Frederick Marius]], who considered the [[robot]] [[dog]] his "best friend". Together, they conducted advanced medical research at the [[Bi-Al Foundation]]. When the [[Fourth Doctor]] and [[Leela]] arrived at the Foundation, Leela quickly became enamoured of the dog. The professor eventually gave the dog to the time travellers as thanks for defeating [[The Swarm (The Invisible Enemy)|the Swarm]]. ([[TV]]: ''[[The Invisible Enemy (TV story)|The Invisible Enemy]]'')


The Mark I was particularly associated with and protective of [[Leela]]. Therefore, when she elected to remain on Gallifrey, he also chose to stay behind with her. ([[TV]]: ''[[The Invasion of Time]]'') Nevertheless, he occasionally left Leela's side when he was sent on solo missions by the [[Time Lord]]s. During these adventures he travelled in a spacecraft the Time Lords build especially for him called ''[[K-NEL]]''. ([[PROSE]]: ''[[K9 and the Missing Planet]]'', and others)  
The Mark I was particularly associated with and protective of Leela. Therefore, when she elected to remain on Gallifrey, he also chose to stay behind with her. ([[TV]]: ''[[The Invasion of Time (TV story)|The Invasion of Time]]'') Nevertheless, he occasionally left Leela's side when he was sent on solo missions by the [[Time Lord]]s. During these adventures he travelled in a spacecraft the Time Lords built especially for him called ''[[K-NEL]]''. ([[PROSE]]: ''[[K9 and the Missing Planet (novel)|K9 and the Missing Planet]]'', et al.)


He eventually came into the service of [[Lord President|Lady President]] [[Romana II]] when Romana tapped [[Leela]] as her personal bodyguard. Together, Leela and the Mark I went on many missions together at Romana's request. He was a vital link between the two ex-[[companion]]s of the Doctor, since he could easily and silently interface with [[K9 Mark II|Romana's K9 unit]]. ([[AUDIO]]: ''[[Square One (audio story)|Square One]]'' and others)
He eventually came into the service of [[Lord President|Lady President]] [[Romana II]] when Romana tapped Leela as her personal bodyguard. Together, Leela and K9 went on many missions together at Romana's request. He was a vital link between the two ex-[[companion]]s of the Doctor, since he could easily and silently interface with [[K9 Mark II|Romana's K9 unit]]. ([[AUDIO]]: ''[[Square One (Gallifrey audio story)|Square One]]'' et al.)


The unit's ultimate fate was considerably unclear, since two radically different accounts existed. According to one, he was utterly destroyed in an explosion and [[Leela]] adamantly refused to have another model built in its place. ([[AUDIO]]: ''[[Imperiatrix (audio story)|Imperiatrix]]'') The other held that he somehow ended up on [[21st century]] [[Earth]], where he was forced to engage his [[regeneration unit]] and become [[K9 Mark 2]]. Thereafter he accepted a boy named [[Starkey]] as his new master, and had several adventures on Earth in the [[2050s]]. ([[TV]]: ''[[Regeneration (TV story)|Regeneration]]'')  
The unit's ultimate fate was considerably unclear, since two radically different accounts existed. According to one, he was utterly destroyed in an explosion and Leela adamantly refused to have another model built in his place. ([[AUDIO]]: ''[[Imperiatrix (audio story)|Imperiatrix]]'') However, the other held that after K9 lived through many adventures of his own in the service of the [[Korven]], [[Alistair Gryffen]]'s [[Space-Time Manipulator]] plucked him out of time and brought him to [[21st century]] [[Earth]], where he was forced to self-destruct when facing the [[Jixen]], engage his [[regeneration unit]], and become [[K9 Mark 2]]. Thereafter he accepted a boy named [[Starkey]] as his new master and had several adventures on Earth in the [[2050s]]. ([[TV]]: ''[[Regeneration (TV story)|Regeneration]]'')


Later models — or ''marks'' — of K9 were based on this one.
Later models — or ''marks'' of K9 were based on this one, with [[K9 Mark II]] and [[K9 Mark III]] in particular being almost identical in outer appearance to the Mark I.


== Biography ==
== Biography ==
=== Creation ===
=== Creation ===
It was unclear who, exactly, ''invented'' the K9 "concept".  When he first met [[Leela]], Professor [[Marius]] said only that he "had K9 made up" — ''not'' that he "created" or "designed" the unit because weight restrictions did not allow him to bring his real [[dog]] from [[Earth]] into [[space]]. ([[TV]]: ''[[The Invisible Enemy]]'')
[[Frederick Marius|Professor Frederick Marius]] had a dog called [[Kelso]]. He couldn't take Kelso with him to his new workplace at the [[Bi-Al Foundation]], so he constructed K9 six months before leaving [[Earth]], working on it day and night. He used all the latest technology. The heart of the machine was Professor Marius' medical computer. A state-of-the-art intraresponsive brain app was added inside which allowed K9 to talk. Furthermore, a huge general knowledgepool was added into the brain. ([[PROSE]]: ''[[One Man and His Dog (short story)|One Man and His Dog]]'')
 
When he first met [[Leela]], Professor Marius said only that he "had K9 made up" — ''not'' that he "created" or "designed" the unit because weight restrictions did not allow him to bring his real [[dog]] from [[Earth]] into [[space]]. ([[TV]]: ''[[The Invisible Enemy (TV story)|The Invisible Enemy]]'')


One account claimed that K9 may have owed his existence to a [[temporal paradox]]. Far from inventing the dog himself, the professor copied the remnants of one of the versions of K9 created by [[the Doctor]] and given to [[Sarah Jane Smith]]. ([[PROSE]]: ''[[Tautology (short story)|Tautology]]'')
One account claimed that K9 may have owed his existence to a [[temporal paradox]]. Far from inventing the dog himself, Marius copied the remnants of one of the versions of K9 created by [[the Doctor]] and given to [[Sarah Jane Smith]]. ([[PROSE]]: ''[[Tautology (short story)|Tautology]]'')


=== Meeting the Doctor and Leela ===
=== Meeting the Doctor and Leela ===
[[File:K9 05.jpg|thumb|left|K9 playing [[chess]] against the [[Fourth Doctor]]. ([[TV]]: ''[[The Sun Makers (TV story)|The Sun Makers]]'')]]
In the year [[5000]] AD, K9 aided Marius in scanning the [[Fourth Doctor]] for [[The Swarm (The Invisible Enemy)|the Swarm]] inside him. He later fought off the humans infected by the Swarm on [[Bi-Al Foundation|Bi-Al]] and on [[Titan Base]], saving the Doctor and [[Leela]]'s lives on several occasions. Marius offered K9 to the Doctor to travel in the TARDIS as Y5K compliance issues ([[PROSE]]: ''[[The Gallifrey Chronicles (novel)|The Gallifrey Chronicles]]'') and weight restrictions made him unable to take K9 back to Earth with him. ([[TV]]: ''[[The Invisible Enemy (TV story)|The Invisible Enemy]]'')
=== On the TARDIS ===
{{section stub|Info from ''[[The Mind Runners (audio story)|The Mind Runners]]'', ''[[The Demon Rises (audio story)|The Demon Rises]]'', ''[[Shadow of the Sun (audio story)|Shadow of the Sun]]'' & ''[[The Dalek Protocol (audio story)|The Dalek Protocol]]'' needs to be added}}
Shortly after being taken aboard the TARDIS, K9 was damaged. The Doctor sought to repair him and kept referring to him as an "it", much to Leela's chagrin. His repair work got interrupted by the Doctor and Leela being intercepted to [[Fetch Priory]] via a [[Relative Continuum Displacement Zone]]. ([[TV]]: ''[[Image of the Fendahl (TV story)|Image of the Fendahl]]'')
K9 became repaired and often played [[chess]] against the Doctor, with Leela moving [[Chess piece|the pieces]] for him. He frequently won. When the TARDIS landed on [[Pluto]], K9 became caught up in affairs and assisted the Doctor and Leela in taking down [[the Collector]] and [[The Company (The Sun Makers)|the Company]]. He led the assault on the [[Correction Centre]] to rescue the Doctor and became an integral part in the eventual uprising. ([[TV]]: ''[[The Sun Makers (TV story)|The Sun Makers]]'')
Sometime during his travels, he met [[Robin Hood]]. ([[TV]]: ''[[The Last Oak Tree (TV story)|The Last Oak Tree]]'')
[[File:K9 connected to Judoon tank.jpg|thumb|K9 is connected to the [[Judoon]] [[tank]]. ([[COMIC]]: ''[[A Rare Gem (comic story)|A Rare Gem]]'')|alt=]]
The Doctor arrived on [[Agratis]] to see the [[Jewel of Fawton]] and eat a banquet. However, the Jewel had gone missing and the [[Judoon]] had been called in to reclaim it. While the Doctor searched for the Jewel's thief, Leela and K9 distracted the Judoon out of the city so the Doctor could leave; K9 connected himself to a [[tank]] and Leela hijacked a [[motorbike]].
When [[Crystalline creature|the species that originally owned the Jewel]] were discovered, the Judoon's search was called off. Becoming much less aggressive, Leela invited them to dine at the banquet. While Leela was feasting with the Judoon, a [[Adam Mitchell|mysterious cloaked figure]] kidnapped Leela and K9. ([[COMIC]]: ''[[A Rare Gem (comic story)|A Rare Gem]]'')
On [[E9874]], he stunned one of the [[Tarl]]s which entered the ship and thought it resembled a [[Neanderthal]]. He worked out that there was atypical development when they travelled in a cart. [[Ergu]] was interested in him. He recognised a complex symbolic pattern. He was damaged when [[Gethal]] kidnapped Leela. He analysed the symbols and found a way to destroy the beacon. ([[AUDIO]]: ''[[The Exxilons (audio story)|The Exxilons]]'')
K9 stopped an assassin from killing the Doctor, which led the Doctor to devise a plan to find out who wanted him. As part of the Doctor's plans, K9 was reprogrammed to obey the [[Rocket Men]] leader [[Shandar]] and was fitted with a rocket to help with their raids. After the Doctor was discovered, K9 stunned {{Pratt}} and Shandar. The Doctor then asked him to direct him through the asteroid field to destroy the rest of the force field generators. Howver, he couldn't do the calculations quickly because he was decrypting the codes of the prisoner and slave locks. He then generated a facsimile of the Doctor. When the Master tried to escape, K9 stalled the Master's TARDIS so he could use it to signal [[Galactic Heritage]]. ([[AUDIO]]: ''[[Requiem for the Rocket Men (audio story)|Requiem for the Rocket Men]]'')
K9 piloted the TARDIS to the coordinates where [[Marshall (Requiem for the Rocket Men)|Marshall]] had said he had traced the Master and Leela. The Doctor asked K9 to trace Leela through the Death Match's arena. He met with the [[Red Knight]] who found him funny and his rocket blew up. This damaged him considerably and shortly afterwards he had to escape from a set of locusts. He rescued Marshall from the Red Knight and showed him the loading bay, realising that the machinery there was used to heal Leela. He then helped the Doctor to reverse the transmat and got them out of the arena and back to the TARDIS. ([[AUDIO]]: ''[[Death Match (audio story)|Death Match]]'')
K9 effected a materialisation on [[Krelos]] and changed the TARDIS control room. He then became infected by the strange particulates in the room. He started to calculate something and ignored the Doctor's commands. He tried to fight the infections. K9 exited the TARDIS and tried to climb after the Doctor and Leela. Re-entering the TARDIS, he told the Doctor that the TARDIS was malfunctioning. He helped the Doctor zone in on [[Geralk]]'s signal. He reported to his new masters that the Doctor and Leela had escaped. Now fully controlled, he set the TARDIS on a course for [[Telos]]. ([[AUDIO]]: ''[[The Fate of Krelos (audio story)|The Fate of Krelos]]'')
The Doctor had changed the course K9 had programmed so that the TARDIS travelled back in time. This weakened the [[Cyberman|Cybermen]]'s control over K9. When the TARDIS fell off a cliff, K9 was damaged and the Doctor noticed that there was a [[Cybermat]] in his brain. He repaired himself and left the TARDIS. He entered the hibernation chamber with the Robot Drone which the Doctor controlled to stop the cyber nanites from infecting the TARDIS. This rewrote time, meaning K9 was no longer infected. ([[AUDIO]]: ''[[Return to Telos (audio story)|Return to Telos]]'')


[[File:K9 05.jpg|thumb|left|K9 playing [[chess]] against the [[Fourth Doctor]]. ([[TV]]: ''[[The Sun Makers]]'')]]
He started to act strangely when he and Leela landed on [[Westtropi III]]. This included shooting Leela's knife out of her hand and telling her not to explore. It was later revealed that he was being controlled by a [[Time Vampire]]. ([[AUDIO]]: ''[[The Time Vampire (audio story)|The Time Vampire]]'')
In the year [[5000]] AD, K9 aided Marius in scanning the [[Fourth Doctor]] for [[The Swarm (The Invisible Enemy)|the Swarm]] inside him. He later fought off the humans infected by the Swarm on [[Bi-Al Foundation|Bi-Al]] and on [[Titan Base]], saving the Doctor and [[Leela|Leela's]] lives on several occasions.


The Professor offered K9 to the [[Fourth Doctor]] to travel in the TARDIS as the same weight restrictions made him unable to take Mark I back to Earth with him. ([[TV]]: ''[[The Invisible Enemy]]'')  
When the TARDIS landed on the ''[[R1C]]'', K9 was plugged into the failing systems of the ship in order to reboot it. He helped the Doctor and the [[Minyan]]s uncover a conspiracy by the [[Oracle (Underworld)|Oracle]] to rule over the Minyans as a god. He participated in the defeat of the Oracle. ([[TV]]: ''[[Underworld (TV story)|Underworld]]'')  
=== On the TARDIS ===
{{Section stub|Needs info from [[The Sun Makers]] and [[The Time Vampire]]}}


Sometime during his travels, he met [[Robin Hood]]. ([[TV]]: ''[[The Last Oak Tree]]'')
The Doctor got annoyed at him continually winning at chess. When Leela asked the Doctor to take him to [[Exxilon]], he was affected by the beacon of the city. Once the Beacon was destroyed, he was activated again. He was given a databank by [[Anya Kingdom]] which brought him to Mark Seven. He later helped reprogramme him. ([[AUDIO]]: ''[[The Dalek Protocol (audio story)|The Dalek Protocol]]'')  


[[File:K9 connected to Judoon tank.jpg|thumb|K9 is connected to the [[Judoon]] [[tank]]. ([[COMIC]]: ''[[Prisoners of Time (comic story)|Prisoners of Time]]'')]]
A short while after their adventures with the Minyan, the Doctor landed the ship in [[Atlantis]]. Almost immediately after K9 and the Doctor walked out, K9 picked up signals from a nearby [[vortex manipulator]], actually belonging to [[River Song]], before starting to malfunction, speaking only in binary code and then not at all. The Doctor realised that the [[Crystal of Kronos]] was creating a [[time eddy]], stranding them. This was part of a wider temporal crisis preventing TARDIS travel across the universe, including for all of the Doctor's incarnations. The [[Thirteenth Doctor]] and [[K9 Mark IV]] worked to remedy the situation by refueling her TARDIS with [[vortex energy]] and connecting all her predecessors' TARDISes through time "like Christmas lights". ([[GAME]]: ''[[Lost in Time (video game)|Lost in Time]]'')
The Doctor arrived on [[Agratis]] to see the [[Jewel of Fawton]] and eat a banquet. However, the Jewel had gone missing, and the [[Judoon]] had been called in to reclaim it. While the Doctor searched for the Jewel's thief, Leela and K9 distracted the Judoon out of the city so the Doctor could leave; K9 connected himself to a [[tank]], and Leela hijacked a [[motorbike]].


When [[Crystalline creature (Prisoners of Time)|the species that originally owned the Jewel]] were discovered, the Judoon's search was called off. Becoming much less aggressive, Leela invited them to dine at the banquet. While Leela was feasting with the Judoon, a [[Cloaked figure (Prisoners of Time)|mysterious cloaked figure]] kidnapped Leela and K9. ([[COMIC]]: ''[[Prisoners of Time (comic story)|Prisoners of Time]]'')
=== Leaving the TARDIS ===
[[File:K9_stays_on_Gallifrey.jpg|thumb|K9 decides to stay on [[Gallifrey]] with [[Leela]]. ([[TV]]: ''[[The Invasion of Time]]'')]]
[[File:K9 stays on Gallifrey.jpg|thumb|K9 decides to remain on [[Gallifrey]] with Leela. ([[TV]]: ''[[The Invasion of Time (TV story)|The Invasion of Time]]'')]]
After a number of adventures with Leela and the Doctor, Mark I decided to stay on [[Gallifrey]] with his "mistress". ([[TV]]: ''[[The Invasion of Time]]'')
K9 participated in the Doctor's plan to put the [[Vardan]]s in a [[time loop]]. In order to effect this, the Doctor had himself inducted as [[Lord President]] on [[Gallifrey]]. He had K9 destroy the [[transduction barrier]], allowing the Vardans to travel along wavelengths and partially materialise on the planet. When the Vardans, and the [[Sontaran]]s who followed them, were defeated, Leela chose to stay behind, having fallen in love with [[Andred (The Invasion of Time)|Andred]]. K9 chose to stay with his "mistress" to look after her. She asked him if the Doctor would be lonely without them, but he could only reply that there was "insufficient data", which saddened both. ([[TV]]: ''[[The Invasion of Time (TV story)|The Invasion of Time]]'')


=== On Gallifrey ===
=== On Gallifrey ===
[[File:K-NEL.jpg|thumb|left|K9 on a mission for the Time Lords in ''[[K-NEL]]'' ([[PROSE]]: ''[[K9 and the Zeta Rescue]]'')]]
On Gallifrey, both K9 and Leela socialised with the Gallifreyans by attending functions. The duo had become celebrities due to their origins off-world, which was unusual to the "sheltered" Gallifreyans. However, K9 and Leela's friendship had become "frosty", and when K9 attended an unveiling of a statue of himself in the [[Panopticon]] due to him helping defeat the [[Sontaran]]s, Leela didn't attend, thinking it was "stupid". K9, by this time, had begun a conversation with [[K9 Mark II]] in [[E-Space]]. K9 told Mark II about Leela's pregnancy, and he and Mark II discreetly squabbled with each other until news of the [[Fourth Doctor]]'s fall and subsequent [[regeneration]] reached Gallifrey and Mark I suggested that they should "bury the [[hatchet]]" at such a trying time. ([[PROSE]]: ''[[Jealous, Possessive (short story)|Jealous, Possessive]]'')
Though K9 remained on [[Gallifrey]] to "protect" Leela, he was occasionally used by the [[Time Lord]]s for various solo missions. Towards this end, they gave him a specially built space vessel called ''[[K-NEL]]'' that only he could control, which gave him freedom of movement in [[space]], but not [[time]]. ([[PROSE]]: ''[[K9 and the Time Trap]]'', et al)
 
[[File:K-NEL.jpg|thumb|left|K9 on a mission for the [[Time Lord]]s in ''[[K-NEL]].'' ([[PROSE]]: ''[[K9 and the Zeta Rescue (novel)|K9 and the Zeta Rescue]]'')]]
When the [[Dominator]]s attempted to conquer [[Gallifrey]], K9 fought alongside [[Leela]] against the invading [[Quark]]s which had "flooded" the [[Capitol]], destroying 39 between them. ([[AUDIO]]: ''[[Time in Office (audio story)|Time in Office]]'')
 
Following an incident in the [[Death Zone]], K9 accompanied [[Andred (The Invasion of Time)|Andred]] on a clean up in order to dispose of what creatures remained there. ([[AUDIO]]: ''[[Time in Office (audio story)|Time in Office]]'')
 
Though K9 remained on Gallifrey to "protect" Leela, he was occasionally used by the [[Time Lord]]s for various solo missions. Towards this end, they gave him a specially built space vessel called ''[[K-NEL]]'' that only he could control, which gave him freedom of movement in [[space]], but not [[time]]. ([[PROSE]]: ''[[K9 and the Time Trap (novel)|K9 and the Time Trap]]'', et al.)
 
K9 was briefly reunited with the Doctor, now in his [[Seventh Doctor|seventh incarnation]], who stopped by to see how Leela's development had progressed. The Doctor took the identity tag from K9's collar as a memento. ([[PROSE]]: ''[[Affirmative (short story)|Affirmative]]'')
 
After the destruction of [[Romana III's Gallifrey]] during the [[War in Heaven]], K9 became trapped in [[the Doctor's TARDIS]]. He was ultimately freed by the [[Eighth Doctor]] and sent on a mission to the planet [[Espero]] ([[PROSE]]: ''[[The Gallifrey Chronicles (novel)|The Gallifrey Chronicles]]'') in search of [[Xing|Madame Xing]], who had previously offered to bring the Doctor's memories back. ([[PROSE]]: ''[[Halflife (novel)|Halflife]]'')
 
K9 was with Leela on Gallifrey for many years, but it was only after the disappearance of Andred that she and her K9 met [[Romana II]] and [[K9 Mark II|her K9]]. Despite the fact that the two K9 units did not get on well and competed with each other, ([[AUDIO]]: ''[[Weapon of Choice (audio story)|Weapon of Choice]]'', ''[[The Inquiry (audio story)|The Inquiry]]'') they frequently networked together and allowed easy communication between their respective mistresses. ([[AUDIO]]: ''[[Square One (Gallifrey audio story)|Square One]]'')
 
Romana sent K9 after Leela when she went to the [[Outsider]]s as Romana wanted her to do something. He was given mission information from Romana's K9. He pretended to be a criminal from [[Fifth Galaxy]] and looked for information on [[Free Time]]. In a bar, he met [[Mephistopheles Arkadian]] as he had more information on the group. He used his information on Shakespeare to enter the human enclave. He realised that the [[Timonic Fusion Device]] was a contrivance. ([[AUDIO]]: ''[[Weapon of Choice (audio story)|Weapon of Choice]]'') He went with Leela to a fake temporal summit as a spy to find out if any delegates were part of the Free Time movement. He was able to get the codes to enter guarded parts of the platform with the help of his counterpart on Gallifrey. As he was part of the systems, he was the reason why Leela could remember the negated timelines. ([[AUDIO]]: ''[[Square One (Gallifrey audio story)|Square One]]'')
 
He was called to the Inquiry into Romana's actions on Gryben and was programmed to speak on K9 Mark II's behalf. He was sent to the Archives to find information on the Timonic Fusion Device and data bomb disarmament. He was asked by Romana to deactivate his other self to allow the bomb to detonate. ([[AUDIO]]: ''[[The Inquiry (audio story)|The Inquiry]]'')


K9 was briefly reunited with the Doctor, now in his [[Seventh Doctor|seventh incarnation]], who stopped by to see how Leela's development had progressed. The Doctor took the identity tag from K9's collar as a memento to remember him by. ([[PROSE]]: ''[[Affirmative]]'')
K9 accompanied Leela to the catacombs of the Capitol and helped her come to terms with Andred's betrayal. When Leela went missing, he contacted K9 Mark II to tell Romana of this. Shortly afterwards, he became infected by [[Pandora]] and only reacted when the other K9 talked. ([[AUDIO]]: ''[[Lies (audio story)|Lies]]'')


K9 was with Leela on Gallifrey for many years, but it was only after the disappearance of her Time Lord husband, [[Andred]], that she and her K9 met [[Romana II]] and [[K9 Mark II|her K9]]. Despite the fact that the two K9 units did not get on well and competed with each other, ([[AUDIO]]: ''[[Weapon of Choice]]'', ''[[The Inquiry (audio story)|The Inquiry]]'') they frequently networked together and allowed easy communication between their respective mistresses. ([[AUDIO]]: ''[[Square One (audio story)|Square One]]'')
He was tasked to do the examination of the mysterious body that landed on [[Davidia]] as he wouldn't be infected by the potential contagion. He worked out that the mysterious body was known to Leela and Romana. He identified the body to be that of [[Wynter (Lies)|Wynter]] and thought that it was an incorrect analysis. He started to hear Pandora's voice. He recorded Wynter's actions when he became the mysterious body. ([[AUDIO]]: ''[[Pandora (audio story)|Pandora]]'')


After Leela became Romana's bodyguard, and after many important missions on her behalf, Leela's K9 was destroyed in a bomb explosion, leaving Leela heartbroken, but refusing to allow a duplicate unit to be built in its place. ([[AUDIO]]: ''[[Imperiatrix (audio story)|Imperiatrix]]'')
He helped Leela with her teaching at the academy and provided information on the Sontaran invasion. He told Leela that she could confide in him. ([[AUDIO]]: ''[[Insurgency (audio story)|Insurgency]]'')


=== After being destroyed ===
He helped Leela to investigate the [[bombing]]s at the Academy. He theorised that [[Darkel]] knew about the bombings from the evidence he had obtained. With [[Narvin]]'s help he investigated the Academy system to find information. He went to the [[Time Scaphe]]'s to find any bombs. Whilst scanning he accidentally set off the bomb. He was destroyed in the resulting [[explosion]]. Leela was heartbroken, but refused to allow a duplicate unit to be built in his place. ([[AUDIO]]: ''[[Imperiatrix (audio story)|Imperiatrix]]'')
In a way not clearly understood, K9 Mark I survived the explosion that Leela and Time Lord technology confirmed had utterly destroyed him. It is possible that Romana rebuilt him at some point, as a thank you present to Leela.


At some point after this event, and indeed after the [[Last Great Time War]], he became an agent of the [[Korven]]. ([[TV]]: ''[[Hound of the Korven]]'') During this period, he had a number of adventures whose details were not well recorded. For example, the Mark I was known to have gone to the second planet of the [[Montoon]] system and observed the Sea of Brains. ([[TV]]: ''[[Curse of Anubis]]'')  He also liberated the [[Anubian]]s from the [[Huduct]]. ([[TV]]: ''[[Curse of Anubis]]'')
=== Agent of the Korven ===
[[File:Buch der Befrei4.jpg|thumb|A drawing of K9 Mark I from the [[Anubian]] [[Anubian Book of Deliverance|Book of Deliverance]]. ([[TV]]: ''[[Curse of Anubis (TV story)|Curse of Anubis]]'')]]
Though [[Leela]] and [[Time Lord]] technology had confirmed that the [[explosion]] had utterly destroyed K9, ([[AUDIO]]: ''[[Imperiatrix (audio story)|Imperiatrix]]'') other accounts indicated that K9 Mark I survived the Last Great Time War and, in its aftermath, became an agent of the [[Korven]]. ([[TV]]: ''[[Hound of the Korven (TV story)|Hound of the Korven]]'') During this period, he had a number of adventures whose details were not well recorded. For example, the Mark I was known to have gone to the second planet of the [[Montoon]] system and observed the [[Sea of Brains]]. He also liberated the [[Anubian]]s from the [[Huduct]]. Furthermore he saved the [[Glomb]] [[Tenklept]] from being eaten by a [[Yakoclaw]]. ([[TV]]: ''[[Curse of Anubis (TV story)|Curse of Anubis]]'')


=== Regeneration ===
=== Regeneration ===
[[File:K9 Mark I Regeneration.jpg|thumb|K9 shortly before his self-destruction and regeneration. ([[TV]]: ''[[Regeneration (TV story)|Regeneration]]'')]]
[[File:K9 Mark I Regeneration.jpg|thumb|left|K9 shortly before his self-destruction and regeneration. ([[TV]]: ''[[Regeneration (TV story)|Regeneration]]'')]]
Later, he went to the year [[50000|50,000]] and met [[Zanthus Pia]], head of the [[Galactic Peace Commission]], whom he later saw murdered at the hands of [[Ahab]], a [[Jixen]] emissary and his three guards. As K9 was a witness, the Jixen attacked K9. ([[TV]]: ''[[The Bounty Hunter]]'') The Jixen were pulled to [[2050]] [[London]] via a [[Space-Time Manipulator]] and tried to warn the humans about a Korven invasion. However, they couldn't speak English and the humans believed they were attacking them. K9 came through the STM and attacked the Jixen. After a brief battle he realised his power was running low, and as a last resort to protect the humans, K9 self-destructed, destroying himself and two of the Jixen. Although working for the Korven, he cared for the safety of humans and advised them to evacuate. Using his [[regeneration unit]], the remains transformed into a [[K9 Mark 2|new incarnation]]. ([[TV]]: ''[[Regeneration (TV story)|Regeneration]]'', ''[[Hound of the Korven]]'')
Later, he went to the year [[50000|50,000]] and met [[Zanthus Pia]], head of the [[Galactic Peace Commission]], whom he later saw murdered at the hands of [[Ahab (The Bounty Hunter)|Ahab]], a [[Jixen]] emissary, and his three guards. As K9 was a witness, the Jixen attacked him. ([[TV]]: ''[[The Bounty Hunter (TV story)|The Bounty Hunter]]'') The Jixen were pulled to [[2050]] [[London]] via a [[Space-Time Manipulator]] and tried to warn the humans about a [[Korven]] invasion. However, they couldn't speak [[English language|English]] and the [[human]]s believed they were attacking them. K9 was likewise pulled across time through the STM and attacked the Jixen. After a brief battle, he realised his power was running low, and as a last resort to protect the humans, K9 self-destructed, destroying himself and two of the Jixen. Although working for the Korven, he cared for the safety of humans and advised them to evacuate. Using his [[regeneration unit]], the remains transformed into a [[K9 Mark 2|new incarnation]]. ([[TV]]: ''[[Regeneration (TV story)|Regeneration]]'', ''[[Hound of the Korven (TV story)|Hound of the Korven]]'')


== Personality ==
== Personality ==
K9 was often left behind in the TARDIS and so he saw journeying out as a treat. ([[TV]]: ''[[The Sun Makers]]'') He stated that to wish was to have emotion and so he wished for nothing. Despite this he regularly showed emotion, even sulking when shouted at. The Doctor described him as overbearing, arrogant and insufferable, after K9 told him there was only a 1% chance of the Doctor having a better explanation for something than him. ([[TV]]: ''[[The Invasion of Time]]'')
[[File:Pampered pooch.jpg|right|thumb|[[Leela]] restores K9's spirits by pampering him. ([[TV]]: ''[[The Invasion of Time (TV story)|The Invasion of Time]]'')]]
K9 was often left behind in [[the TARDIS]] and so he saw journeying out as a treat. ([[TV]]: ''[[The Sun Makers (TV story)|The Sun Makers]]'') Despite his claims that he was not programmed to feel [[emotion]], he did show a capacity for feeling. He sulked when [[Leela]] insulted him, and would only talk to her again after she apologised.
 
The Doctor described him as overbearing, [[arrogance|arrogant]] and insufferable, after K9 told him there was only a 1% chance of the Doctor having a better explanation for something than him.
 
[[Andred (The Invasion of Time)|Andred]] claimed "If [he] had a [[dog]] like [K9] in [his] unit, [he'd] make him a [[sergeant]]". ([[TV]]: ''[[The Invasion of Time (TV story)|The Invasion of Time]]'')
 
The Doctor once described K9 as one of his best friends. ([[AUDIO]]: ''[[The Exxilons (audio story)|The Exxilons]]'')


== Features ==
== Features ==
The mechanics of K9 Mark I included rotating ear-probes, telescopic 'eye' probe, extendable nose, flashing lights on the top and the 'eye' panel, waggling tail antennae, and ticker-tape tongue. The head could also move up and down. The shell was painted in gold/grey metallic. There was a monitor screen on his left flank, though K9 rarely used this during his travels with the Doctor. Around K9's neck was a tartan collar, from which hung a silver disk. ([[TV]]: ''[[The Invisible Enemy]]'') By the time of his liberation of the [[Anubian]]s, K9 was modified (likely by the Time Lords or the Korven) so he could fly through the vacuum of space. ([[TV]]: ''[[Curse of Anubis]]'') K9 had a vast database inherited by his [[K9 Mark 2|next incarnation]] containing data on the following aliens:
{{Section cleanup|Bulleted list should be converted to sourced prose}}
[[File:Buch der Befrei5.jpg|thumb|left|A drawing of the flying K9 Mark I from the [[Anubian]] [[Anubian Book of Deliverance|Book of Deliverance]]. ([[TV]]: ''[[Curse of Anubis (TV story)|Curse of Anubis]]'')]]
The mechanics of K9 Mark I included rotating ear-probes, telescopic "eye" probe, extendable nose, flashing lights on the top and the "eye" panel, waggling tail antennae, and ticker-tape tongue. The head could also move up and down. The shell was painted in gold/grey metallic. There was a [[monitor]] screen on his left flank, though K9 rarely used this during his travels with the [[Fourth Doctor]]. Around K9's neck was a tartan collar, from which hung a silver disk. ([[TV]]: ''[[The Invisible Enemy (TV story)|The Invisible Enemy]]'') By the time of his liberation of the [[Anubian]]s, K9 was modified so he could fly through the vacuum of space. ([[TV]]: ''[[Curse of Anubis (TV story)|Curse of Anubis]]'')
 
K9 was capable of calculating up to 72 [[variable]]s at once. He could project a simulation of the Fourth Doctor, with accurate personality and behaviour, which fooled even {{Pratt}}. ([[AUDIO]]: ''[[Requiem for the Rocket Men (audio story)|Requiem for the Rocket Men]]'')
 
The [[Rocket Men]] installed a propulsion unit in K9 while he was in their possession. ([[AUDIO]]: ''[[Death Match (audio story)|Death Match]]'')
 
K9 had a vast database inherited by his [[K9 Mark 2|next incarnation]] containing data on the following aliens:
* [[Glomb]]
* [[Jixen]]
* [[Jixen]]
* [[Meron]]
* [[Meron]]
* [[Mermaid]]s of [[Gorgol XIII]]
* [[Mermaid]]s of [[Gorgol XIII]]
* [[Korven]]
* [[Korven]]
* [[Sporax]]
* [[Sporraxx]]
* [[Oroborus]]
* [[Oroborus]]
* [[Mede]]s
* [[Mede]]s
* [[Aeolian]]
* [[Aeolian]]
* [[Yakoclaw]]s


''Aside from the Korven or Jixen, it is unknown whether he actually encountered any of these species before he encountered them as K9 Mark 2.''
K9 claimed that he was shaped like a [[dog]] because "the [[human]] [[ego]] requires a familiar reference point to aid in adjusting to new concepts. [[Animal]] forms are comforting to the majority of humans." ([[PROSE]]: ''[[Housewarming (short story)|Housewarming]]'')
 
K9 claimed that he was shaped like a [[dog]] because "the human ego requires a familiar reference point to aid in adjusting to new concepts. Animal forms are comforting to the majority of humans." ([[PROSE]]: ''[[Housewarming (short story)|Housewarming]]'')


== Behind the scenes ==
== Behind the scenes ==
[[File:K9 MI's models.jpg|thumb|The K9 used in ''[[Regeneration (TV story)|Regeneration]]'' was identical to the one used during K9's original run on ''[[Doctor Who]]''.]]
* In an early draft of ''The Invisible Enemy'', K9 was called FIDO, for "Phenomenal Indication Data Observation". ([[INFO]]: ''[[The Invisible Enemy (TV story)|The Invisible Enemy]]'')
* In an early draft of ''The Invisible Enemy'', K9 was called FIDO, for "Phenomenal Indication Data Observation". ([[INFO]]: ''[[The Invisible Enemy (TV story)|The Invisible Enemy]]'')
* The original K9 model was designed by [[visual effects designer]] [[Tony Harding]]. One early concept was to have a small actor in a large Doberman-shaped costume; however, [[Graham Williams]] vetoed this, saying that the robot should not look like a person in a costume. The eventual design was closely based on Harding's third concept sketch. ([[DCOM]]: ''[[The Invisible Enemy (TV story)|The Invisible Enemy]]'')
* The original K9 model was designed by [[visual effects designer]] [[Tony Harding]]. One early concept was to have a small actor in a large Doberman-shaped costume; however, [[Graham Williams]] vetoed this, saying that the robot should not look like a person in a costume. The eventual design was closely based on Harding's third concept sketch. ([[DCOM]]: ''[[The Invisible Enemy (TV story)|The Invisible Enemy]]'')
[[File:K9_MI's_models.jpg|thumb|The K9 used in ''[[Regeneration (TV story)|Regeneration]]'' was identical to the one used during K9's original run on ''[[Doctor Who]]''.]]
* K9 Mark I returned in the first episode of ''[[K9 (TV series)|K9]]''. When asked by a fan for clarification [[Bob Baker]] said:{{quote|Yes this is the K9 that the Doctor left with Leela on Gallifrey. In this version he was plucked out of space and time by the STM totally at random. His self-destruct in Ep 1 to save the humans results in triggering a "regeneration unit" put there presumably by the Time Lords, but of course we're not allowed to mention that.|[[Bob Baker]]<ref>[http://www.natfor.com/bbforum/viewtopic.php?f=14&t=404 Bob Baker's Forum]</ref>}}
* K9 Mark I returned in the first episode of ''[[K9 (TV series)|K9]]''. When asked by a fan for clarification [[Bob Baker]] said:{{quote|Yes this is the K9 that the Doctor left with Leela on Gallifrey. In this version he was plucked out of space and time by the STM totally at random. His self-destruct in Ep 1 to save the humans results in triggering a "regeneration unit" put there presumably by the Time Lords, but of course we're not allowed to mention that.|[[Bob Baker]]<ref>[http://www.natfor.com/bbforum/viewtopic.php?f=14&t=404 Bob Baker's Forum]</ref>}}
[[File:K9MIIBox.jpg|thumb|This box from ''[[The Invasion of Time]]'' is the only televised evidence for the fact that [[Leela]]'s model was "Mark I"]]
* K9 Mark I was the first in a seven-year run of non-human televised companions who inhabited the TARDIS, ending with the departure of [[Vislor Turlough|Turlough]] in 1984. Others included [[K9 Mark II]], [[Romana I]], [[Romana II]], [[Adric]], [[Nyssa]] and, nominally, [[Kamelion]].[[File:K9MIIBox.jpg|thumb|This box from ''[[The Invasion of Time (TV story)|The Invasion of Time]]'' is the only televised evidence for the fact that [[Leela]]'s model was "Mark I"]]
* The numbers appended to K9's "marks" have ''narrative'' origin — unlike, say, [[Romana I|Romana '''''I''''']], which is actually a fan ''assumption''. ''[[The Invasion of Time (TV story)|The Invasion of Time]]'' ends with the Doctor pushing a box labelled "K9 MII" into the [[console room]], which implies that the model that stayed with [[Leela]] on [[Gallifrey]] was "K9 MI". However, based on televised stories alone, there was no indication that this designation was programmed into the two units. It was later established by [[John Leeson]]'s ''dialogue'' in [[AUDIO]]: ''[[The Inquiry]]'' that K9 Mark I thought of ''himself'' as "K9 Mark I" and Romana's model as "K9 Mark II". Nevertheless, ''nothing'' has ever clearly indicated that the Mark I was truly "the first K9 ever built, anywhere in the universe". The designation is relative to the Doctor's perception, or to relative age amongst the K9 units eventually resident on [[Gallifrey]].
* The numbers appended to K9's "marks" have ''narrative'' origin — unlike, say, [[Romana I|Romana ''I'']], which is actually a fan ''assumption''. ''[[The Invasion of Time (TV story)|The Invasion of Time]]'' ends with the Doctor pushing a box labelled "K9 MII" into the [[console room]], which implies that the model that stayed with [[Leela]] on [[Gallifrey]] was "K9 MI". However, based on televised stories alone, there was no indication that this designation was programmed into the two units. It was later established by [[John Leeson]]'s ''dialogue'' in the audio story ''[[The Inquiry (audio story)|The Inquiry]]'' and the short story ''[[Jealous, Possessive (short story)|Jealous, Possessive]]'' that K9 Mark I thought of ''himself'' as "K9 Mark I" and Romana's model as "K9 Mark II". Nevertheless, ''nothing'' has ever clearly indicated that the Mark I was truly "the first K9 ever built, anywhere in the universe". The designation is relative to the Doctor's perception, or to relative age amongst the K9 units eventually resident on [[Gallifrey]].
* K9 Mark I was the first in a seven-year run of non-human televised companions who inhabited the TARDIS, ending with the departure of [[Vislor Turlough|Turlough]] in 1984. Others included [[K9 Mark II]], [[Romana I]], [[Romana II]], [[Adric]], [[Nyssa]] and, nominally, [[Kamelion]].


== Footnotes ==
== Footnotes ==
{{reflist}}  
{{reflist}}
{{Companions of the Fourth Doctor}}
{{Companions of the Fourth Doctor}}
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[[es:K9 Modelo I]]

Latest revision as of 17:39, 8 September 2024

K9 Mark I, or K9 Mark 1, (TV: Regeneration) was a portable computer originally owned by Professor Frederick Marius, who considered the robot dog his "best friend". Together, they conducted advanced medical research at the Bi-Al Foundation. When the Fourth Doctor and Leela arrived at the Foundation, Leela quickly became enamoured of the dog. The professor eventually gave the dog to the time travellers as thanks for defeating the Swarm. (TV: The Invisible Enemy)

The Mark I was particularly associated with and protective of Leela. Therefore, when she elected to remain on Gallifrey, he also chose to stay behind with her. (TV: The Invasion of Time) Nevertheless, he occasionally left Leela's side when he was sent on solo missions by the Time Lords. During these adventures he travelled in a spacecraft the Time Lords built especially for him called K-NEL. (PROSE: K9 and the Missing Planet, et al.)

He eventually came into the service of Lady President Romana II when Romana tapped Leela as her personal bodyguard. Together, Leela and K9 went on many missions together at Romana's request. He was a vital link between the two ex-companions of the Doctor, since he could easily and silently interface with Romana's K9 unit. (AUDIO: Square One et al.)

The unit's ultimate fate was considerably unclear, since two radically different accounts existed. According to one, he was utterly destroyed in an explosion and Leela adamantly refused to have another model built in his place. (AUDIO: Imperiatrix) However, the other held that after K9 lived through many adventures of his own in the service of the Korven, Alistair Gryffen's Space-Time Manipulator plucked him out of time and brought him to 21st century Earth, where he was forced to self-destruct when facing the Jixen, engage his regeneration unit, and become K9 Mark 2. Thereafter he accepted a boy named Starkey as his new master and had several adventures on Earth in the 2050s. (TV: Regeneration)

Later models — or marks — of K9 were based on this one, with K9 Mark II and K9 Mark III in particular being almost identical in outer appearance to the Mark I.

Biography[[edit] | [edit source]]

Creation[[edit] | [edit source]]

Professor Frederick Marius had a dog called Kelso. He couldn't take Kelso with him to his new workplace at the Bi-Al Foundation, so he constructed K9 six months before leaving Earth, working on it day and night. He used all the latest technology. The heart of the machine was Professor Marius' medical computer. A state-of-the-art intraresponsive brain app was added inside which allowed K9 to talk. Furthermore, a huge general knowledgepool was added into the brain. (PROSE: One Man and His Dog)

When he first met Leela, Professor Marius said only that he "had K9 made up" — not that he "created" or "designed" the unit — because weight restrictions did not allow him to bring his real dog from Earth into space. (TV: The Invisible Enemy)

One account claimed that K9 may have owed his existence to a temporal paradox. Far from inventing the dog himself, Marius copied the remnants of one of the versions of K9 created by the Doctor and given to Sarah Jane Smith. (PROSE: Tautology)

Meeting the Doctor and Leela[[edit] | [edit source]]

K9 playing chess against the Fourth Doctor. (TV: The Sun Makers)

In the year 5000 AD, K9 aided Marius in scanning the Fourth Doctor for the Swarm inside him. He later fought off the humans infected by the Swarm on Bi-Al and on Titan Base, saving the Doctor and Leela's lives on several occasions. Marius offered K9 to the Doctor to travel in the TARDIS as Y5K compliance issues (PROSE: The Gallifrey Chronicles) and weight restrictions made him unable to take K9 back to Earth with him. (TV: The Invisible Enemy)

On the TARDIS[[edit] | [edit source]]

This section's awfully stubby.

Info from The Mind Runners, The Demon Rises, Shadow of the Sun & The Dalek Protocol needs to be added

Shortly after being taken aboard the TARDIS, K9 was damaged. The Doctor sought to repair him and kept referring to him as an "it", much to Leela's chagrin. His repair work got interrupted by the Doctor and Leela being intercepted to Fetch Priory via a Relative Continuum Displacement Zone. (TV: Image of the Fendahl)

K9 became repaired and often played chess against the Doctor, with Leela moving the pieces for him. He frequently won. When the TARDIS landed on Pluto, K9 became caught up in affairs and assisted the Doctor and Leela in taking down the Collector and the Company. He led the assault on the Correction Centre to rescue the Doctor and became an integral part in the eventual uprising. (TV: The Sun Makers)

Sometime during his travels, he met Robin Hood. (TV: The Last Oak Tree)

K9 is connected to the Judoon tank. (COMIC: A Rare Gem)

The Doctor arrived on Agratis to see the Jewel of Fawton and eat a banquet. However, the Jewel had gone missing and the Judoon had been called in to reclaim it. While the Doctor searched for the Jewel's thief, Leela and K9 distracted the Judoon out of the city so the Doctor could leave; K9 connected himself to a tank and Leela hijacked a motorbike.

When the species that originally owned the Jewel were discovered, the Judoon's search was called off. Becoming much less aggressive, Leela invited them to dine at the banquet. While Leela was feasting with the Judoon, a mysterious cloaked figure kidnapped Leela and K9. (COMIC: A Rare Gem)

On E9874, he stunned one of the Tarls which entered the ship and thought it resembled a Neanderthal. He worked out that there was atypical development when they travelled in a cart. Ergu was interested in him. He recognised a complex symbolic pattern. He was damaged when Gethal kidnapped Leela. He analysed the symbols and found a way to destroy the beacon. (AUDIO: The Exxilons)

K9 stopped an assassin from killing the Doctor, which led the Doctor to devise a plan to find out who wanted him. As part of the Doctor's plans, K9 was reprogrammed to obey the Rocket Men leader Shandar and was fitted with a rocket to help with their raids. After the Doctor was discovered, K9 stunned the Decayed Master and Shandar. The Doctor then asked him to direct him through the asteroid field to destroy the rest of the force field generators. Howver, he couldn't do the calculations quickly because he was decrypting the codes of the prisoner and slave locks. He then generated a facsimile of the Doctor. When the Master tried to escape, K9 stalled the Master's TARDIS so he could use it to signal Galactic Heritage. (AUDIO: Requiem for the Rocket Men)

K9 piloted the TARDIS to the coordinates where Marshall had said he had traced the Master and Leela. The Doctor asked K9 to trace Leela through the Death Match's arena. He met with the Red Knight who found him funny and his rocket blew up. This damaged him considerably and shortly afterwards he had to escape from a set of locusts. He rescued Marshall from the Red Knight and showed him the loading bay, realising that the machinery there was used to heal Leela. He then helped the Doctor to reverse the transmat and got them out of the arena and back to the TARDIS. (AUDIO: Death Match)

K9 effected a materialisation on Krelos and changed the TARDIS control room. He then became infected by the strange particulates in the room. He started to calculate something and ignored the Doctor's commands. He tried to fight the infections. K9 exited the TARDIS and tried to climb after the Doctor and Leela. Re-entering the TARDIS, he told the Doctor that the TARDIS was malfunctioning. He helped the Doctor zone in on Geralk's signal. He reported to his new masters that the Doctor and Leela had escaped. Now fully controlled, he set the TARDIS on a course for Telos. (AUDIO: The Fate of Krelos)

The Doctor had changed the course K9 had programmed so that the TARDIS travelled back in time. This weakened the Cybermen's control over K9. When the TARDIS fell off a cliff, K9 was damaged and the Doctor noticed that there was a Cybermat in his brain. He repaired himself and left the TARDIS. He entered the hibernation chamber with the Robot Drone which the Doctor controlled to stop the cyber nanites from infecting the TARDIS. This rewrote time, meaning K9 was no longer infected. (AUDIO: Return to Telos)

He started to act strangely when he and Leela landed on Westtropi III. This included shooting Leela's knife out of her hand and telling her not to explore. It was later revealed that he was being controlled by a Time Vampire. (AUDIO: The Time Vampire)

When the TARDIS landed on the R1C, K9 was plugged into the failing systems of the ship in order to reboot it. He helped the Doctor and the Minyans uncover a conspiracy by the Oracle to rule over the Minyans as a god. He participated in the defeat of the Oracle. (TV: Underworld)

The Doctor got annoyed at him continually winning at chess. When Leela asked the Doctor to take him to Exxilon, he was affected by the beacon of the city. Once the Beacon was destroyed, he was activated again. He was given a databank by Anya Kingdom which brought him to Mark Seven. He later helped reprogramme him. (AUDIO: The Dalek Protocol)

A short while after their adventures with the Minyan, the Doctor landed the ship in Atlantis. Almost immediately after K9 and the Doctor walked out, K9 picked up signals from a nearby vortex manipulator, actually belonging to River Song, before starting to malfunction, speaking only in binary code and then not at all. The Doctor realised that the Crystal of Kronos was creating a time eddy, stranding them. This was part of a wider temporal crisis preventing TARDIS travel across the universe, including for all of the Doctor's incarnations. The Thirteenth Doctor and K9 Mark IV worked to remedy the situation by refueling her TARDIS with vortex energy and connecting all her predecessors' TARDISes through time "like Christmas lights". (GAME: Lost in Time)

Leaving the TARDIS[[edit] | [edit source]]

K9 decides to remain on Gallifrey with Leela. (TV: The Invasion of Time)

K9 participated in the Doctor's plan to put the Vardans in a time loop. In order to effect this, the Doctor had himself inducted as Lord President on Gallifrey. He had K9 destroy the transduction barrier, allowing the Vardans to travel along wavelengths and partially materialise on the planet. When the Vardans, and the Sontarans who followed them, were defeated, Leela chose to stay behind, having fallen in love with Andred. K9 chose to stay with his "mistress" to look after her. She asked him if the Doctor would be lonely without them, but he could only reply that there was "insufficient data", which saddened both. (TV: The Invasion of Time)

On Gallifrey[[edit] | [edit source]]

On Gallifrey, both K9 and Leela socialised with the Gallifreyans by attending functions. The duo had become celebrities due to their origins off-world, which was unusual to the "sheltered" Gallifreyans. However, K9 and Leela's friendship had become "frosty", and when K9 attended an unveiling of a statue of himself in the Panopticon due to him helping defeat the Sontarans, Leela didn't attend, thinking it was "stupid". K9, by this time, had begun a conversation with K9 Mark II in E-Space. K9 told Mark II about Leela's pregnancy, and he and Mark II discreetly squabbled with each other until news of the Fourth Doctor's fall and subsequent regeneration reached Gallifrey and Mark I suggested that they should "bury the hatchet" at such a trying time. (PROSE: Jealous, Possessive)

K9 on a mission for the Time Lords in K-NEL. (PROSE: K9 and the Zeta Rescue)

When the Dominators attempted to conquer Gallifrey, K9 fought alongside Leela against the invading Quarks which had "flooded" the Capitol, destroying 39 between them. (AUDIO: Time in Office)

Following an incident in the Death Zone, K9 accompanied Andred on a clean up in order to dispose of what creatures remained there. (AUDIO: Time in Office)

Though K9 remained on Gallifrey to "protect" Leela, he was occasionally used by the Time Lords for various solo missions. Towards this end, they gave him a specially built space vessel called K-NEL that only he could control, which gave him freedom of movement in space, but not time. (PROSE: K9 and the Time Trap, et al.)

K9 was briefly reunited with the Doctor, now in his seventh incarnation, who stopped by to see how Leela's development had progressed. The Doctor took the identity tag from K9's collar as a memento. (PROSE: Affirmative)

After the destruction of Romana III's Gallifrey during the War in Heaven, K9 became trapped in the Doctor's TARDIS. He was ultimately freed by the Eighth Doctor and sent on a mission to the planet Espero (PROSE: The Gallifrey Chronicles) in search of Madame Xing, who had previously offered to bring the Doctor's memories back. (PROSE: Halflife)

K9 was with Leela on Gallifrey for many years, but it was only after the disappearance of Andred that she and her K9 met Romana II and her K9. Despite the fact that the two K9 units did not get on well and competed with each other, (AUDIO: Weapon of Choice, The Inquiry) they frequently networked together and allowed easy communication between their respective mistresses. (AUDIO: Square One)

Romana sent K9 after Leela when she went to the Outsiders as Romana wanted her to do something. He was given mission information from Romana's K9. He pretended to be a criminal from Fifth Galaxy and looked for information on Free Time. In a bar, he met Mephistopheles Arkadian as he had more information on the group. He used his information on Shakespeare to enter the human enclave. He realised that the Timonic Fusion Device was a contrivance. (AUDIO: Weapon of Choice) He went with Leela to a fake temporal summit as a spy to find out if any delegates were part of the Free Time movement. He was able to get the codes to enter guarded parts of the platform with the help of his counterpart on Gallifrey. As he was part of the systems, he was the reason why Leela could remember the negated timelines. (AUDIO: Square One)

He was called to the Inquiry into Romana's actions on Gryben and was programmed to speak on K9 Mark II's behalf. He was sent to the Archives to find information on the Timonic Fusion Device and data bomb disarmament. He was asked by Romana to deactivate his other self to allow the bomb to detonate. (AUDIO: The Inquiry)

K9 accompanied Leela to the catacombs of the Capitol and helped her come to terms with Andred's betrayal. When Leela went missing, he contacted K9 Mark II to tell Romana of this. Shortly afterwards, he became infected by Pandora and only reacted when the other K9 talked. (AUDIO: Lies)

He was tasked to do the examination of the mysterious body that landed on Davidia as he wouldn't be infected by the potential contagion. He worked out that the mysterious body was known to Leela and Romana. He identified the body to be that of Wynter and thought that it was an incorrect analysis. He started to hear Pandora's voice. He recorded Wynter's actions when he became the mysterious body. (AUDIO: Pandora)

He helped Leela with her teaching at the academy and provided information on the Sontaran invasion. He told Leela that she could confide in him. (AUDIO: Insurgency)

He helped Leela to investigate the bombings at the Academy. He theorised that Darkel knew about the bombings from the evidence he had obtained. With Narvin's help he investigated the Academy system to find information. He went to the Time Scaphe's to find any bombs. Whilst scanning he accidentally set off the bomb. He was destroyed in the resulting explosion. Leela was heartbroken, but refused to allow a duplicate unit to be built in his place. (AUDIO: Imperiatrix)

Agent of the Korven[[edit] | [edit source]]

A drawing of K9 Mark I from the Anubian Book of Deliverance. (TV: Curse of Anubis)

Though Leela and Time Lord technology had confirmed that the explosion had utterly destroyed K9, (AUDIO: Imperiatrix) other accounts indicated that K9 Mark I survived the Last Great Time War and, in its aftermath, became an agent of the Korven. (TV: Hound of the Korven) During this period, he had a number of adventures whose details were not well recorded. For example, the Mark I was known to have gone to the second planet of the Montoon system and observed the Sea of Brains. He also liberated the Anubians from the Huduct. Furthermore he saved the Glomb Tenklept from being eaten by a Yakoclaw. (TV: Curse of Anubis)

Regeneration[[edit] | [edit source]]

K9 shortly before his self-destruction and regeneration. (TV: Regeneration)

Later, he went to the year 50,000 and met Zanthus Pia, head of the Galactic Peace Commission, whom he later saw murdered at the hands of Ahab, a Jixen emissary, and his three guards. As K9 was a witness, the Jixen attacked him. (TV: The Bounty Hunter) The Jixen were pulled to 2050 London via a Space-Time Manipulator and tried to warn the humans about a Korven invasion. However, they couldn't speak English and the humans believed they were attacking them. K9 was likewise pulled across time through the STM and attacked the Jixen. After a brief battle, he realised his power was running low, and as a last resort to protect the humans, K9 self-destructed, destroying himself and two of the Jixen. Although working for the Korven, he cared for the safety of humans and advised them to evacuate. Using his regeneration unit, the remains transformed into a new incarnation. (TV: Regeneration, Hound of the Korven)

Personality[[edit] | [edit source]]

Leela restores K9's spirits by pampering him. (TV: The Invasion of Time)

K9 was often left behind in the TARDIS and so he saw journeying out as a treat. (TV: The Sun Makers) Despite his claims that he was not programmed to feel emotion, he did show a capacity for feeling. He sulked when Leela insulted him, and would only talk to her again after she apologised.

The Doctor described him as overbearing, arrogant and insufferable, after K9 told him there was only a 1% chance of the Doctor having a better explanation for something than him.

Andred claimed "If [he] had a dog like [K9] in [his] unit, [he'd] make him a sergeant". (TV: The Invasion of Time)

The Doctor once described K9 as one of his best friends. (AUDIO: The Exxilons)

Features[[edit] | [edit source]]

This section needs a cleanup.

Bulleted list should be converted to sourced prose

A drawing of the flying K9 Mark I from the Anubian Book of Deliverance. (TV: Curse of Anubis)

The mechanics of K9 Mark I included rotating ear-probes, telescopic "eye" probe, extendable nose, flashing lights on the top and the "eye" panel, waggling tail antennae, and ticker-tape tongue. The head could also move up and down. The shell was painted in gold/grey metallic. There was a monitor screen on his left flank, though K9 rarely used this during his travels with the Fourth Doctor. Around K9's neck was a tartan collar, from which hung a silver disk. (TV: The Invisible Enemy) By the time of his liberation of the Anubians, K9 was modified so he could fly through the vacuum of space. (TV: Curse of Anubis)

K9 was capable of calculating up to 72 variables at once. He could project a simulation of the Fourth Doctor, with accurate personality and behaviour, which fooled even the Decayed Master. (AUDIO: Requiem for the Rocket Men)

The Rocket Men installed a propulsion unit in K9 while he was in their possession. (AUDIO: Death Match)

K9 had a vast database inherited by his next incarnation containing data on the following aliens:

K9 claimed that he was shaped like a dog because "the human ego requires a familiar reference point to aid in adjusting to new concepts. Animal forms are comforting to the majority of humans." (PROSE: Housewarming)

Behind the scenes[[edit] | [edit source]]

The K9 used in Regeneration was identical to the one used during K9's original run on Doctor Who.
  • In an early draft of The Invisible Enemy, K9 was called FIDO, for "Phenomenal Indication Data Observation". (INFO: The Invisible Enemy)
  • The original K9 model was designed by visual effects designer Tony Harding. One early concept was to have a small actor in a large Doberman-shaped costume; however, Graham Williams vetoed this, saying that the robot should not look like a person in a costume. The eventual design was closely based on Harding's third concept sketch. (DCOM: The Invisible Enemy)
  • K9 Mark I returned in the first episode of K9. When asked by a fan for clarification Bob Baker said:

    Yes this is the K9 that the Doctor left with Leela on Gallifrey. In this version he was plucked out of space and time by the STM totally at random. His self-destruct in Ep 1 to save the humans results in triggering a "regeneration unit" put there presumably by the Time Lords, but of course we're not allowed to mention that.Bob Baker[1]

  • K9 Mark I was the first in a seven-year run of non-human televised companions who inhabited the TARDIS, ending with the departure of Turlough in 1984. Others included K9 Mark II, Romana I, Romana II, Adric, Nyssa and, nominally, Kamelion.
    This box from The Invasion of Time is the only televised evidence for the fact that Leela's model was "Mark I"
  • The numbers appended to K9's "marks" have narrative origin — unlike, say, Romana I, which is actually a fan assumption. The Invasion of Time ends with the Doctor pushing a box labelled "K9 MII" into the console room, which implies that the model that stayed with Leela on Gallifrey was "K9 MI". However, based on televised stories alone, there was no indication that this designation was programmed into the two units. It was later established by John Leeson's dialogue in the audio story The Inquiry and the short story Jealous, Possessive that K9 Mark I thought of himself as "K9 Mark I" and Romana's model as "K9 Mark II". Nevertheless, nothing has ever clearly indicated that the Mark I was truly "the first K9 ever built, anywhere in the universe". The designation is relative to the Doctor's perception, or to relative age amongst the K9 units eventually resident on Gallifrey.

Footnotes[[edit] | [edit source]]