K9

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For the TV series see K9 (TV series)
For the failed TV series, see K9 and Company

K9 — occasionally styled K-9 — was the designation given to a series of intelligent dog-like robots who served as companions for the Fourth Doctor, Leela, Romana, Sarah Jane Smith and Starkey.

Biography

K9 Mark I

Professor Marius, who invented the first K9, describes him as "My best friend and constant companion." Marius used to have a dog on Earth, but because weight requirements did not allow him to bring his real dog from Earth into space he created K9. (DW: The Invisible Enemy) However, K9 may owe his existence to a temporal paradox. According to one account, the Professor copied the remnants of one of the version of K9 created by the Doctor and given to Sarah Jane Smith. (DWM: Tautology)

The Professor offered K9 to the Fourth Doctor as the same weight requirements made him unable to take Mark I back to Earth with him. (DW: The Invisible Enemy) After a number of adventures with Leela and the Doctor, Mark I decided to stay on Gallifrey with his "mistress". (DW: The Invasion of Time).

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

The Fourth Doctor and K9 Mark II spent an indeterminate period of time together. However, in the next episode, DW: The Ribos Operation, the Doctor appeared to be activating K9 Mark II, giving the implication only that no significant time had elapsed since leaving Gallifrey.

There are (possibly apocryphal) accounts that this model of K9 later performed missions on behalf of the Time Lords and was given control of a space vessel called K-NEL (The Adventures of K9: K9 and the Time Trap, et al).

K9 accompanied Leela on Gallifrey for many years, but it was only after the disappearance of her Time Lord husband, Andred, that Leela and her K9 met Romana and her K9 (the two K9 units did not get on well and competed with each other). (BFG: Weapon of Choice) 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. (BFG: Imperiatrix)

However, he survived this along with the Last Great Time War and eventually witnessed the murder of Zanthus Pia by Ahab. His Jixen henchmen fought him and were transported to 2050 Earth, K9 self-destructed to protect the humans nearby, he then regenerated into a more advanced model. (K9TV: Regeneration,The Bounty Hunter)

K9 Mark II

At some point prior to this, the Doctor obtained or constructed at least one (possibly more) backup models of K9, and immediately after leaving Mark I behind with Leela, the Doctor unpacked K9 Mark II. This version of K9 accompanied the Doctor and new companion on their quest to locate the segments of the Key to Time (DW: The Ribos Operation), however the swampy terrain of Delta III made it impossible for him to accompany them there. At the conclusion of the quest, the Shadow turned K9 to his evil will, during which time K9 assumed a sinister personality. (DW: The Armageddon Factor)

The Fourth Doctor found that K9 had contracted laryngitis and had lost his voice as a result of this. K9 was left in the TARDIS while the Doctor and Romana battled the Daleks and Davros (DW: Destiny of the Daleks). During a subsequent adventure, it remained patiently in the TARDIS, which would imply that his voice had not yet returned. (DW: City of Death) After the return of his voice, it sounded quite different and remained so for a number of adventures (DW: The Creature from the Pit). However, later the familiar voice returned. (DW: The Leisure Hive)

K-9 had travelled to E-Space with The Doctor and Romana II where they met Adric he had his head knocked off while trying to defend Romana, Adric, Varsh, Tylos and Keera. (DW: Full Circle)

K-9's head about to be blown off

Damaged by the time winds, K9 Mark II could not cross back into N-Space with the Doctor, so decided to stay behind at the Gateway with Romana, to help her free the remaining Tharils from slavery. (DW: Warriors' Gate) Eventually, however, Romana and the presumably repaired K9 returned to their own universe, and K9 Mark II came to live on Gallifrey. (NA: Lungbarrow, WC: Shada, BFA: Zagreus)

During Romana's Presidency of Gallifrey, Leela became her bodyguard, and the two K9 units were forced to work together, not always amicably. After Matthias had replaced Romana as President, he nominated her to undertake a mission to find a cure for the Free Time virus, to be followed by exile. K9 opted to remain in the employ of Matthias, fighting the infection on Gallifrey. However, Braxiatel and K9 had planned another operation. Realising that the only cure to the virus was to end the regeneration capabilities of the Time Lords, Braxiatel used a Time Scoop to collect the Time Lord bio-data archive (along with with K9). Romana was then asked to decide whether to administer the cure, or to let Gallifrey die and rebuild it from scratch with the bio-data archive. Her decision is not known. (BFG: Gallifrey)

The fates of K9 in light of the Last Great Time War remain unknown.

K9 Mark III

K9 protecting the Doctor and the others. (DW: School Reunion)

A third model, K9 Mark III (again either obtained or constructed by the Doctor) was shipped to Sarah Jane Smith in 1978 to serve as her companion, but she did not receive his gift until 1981. Afterwards, K9 assisted Sarah Jane in defeating the Hecate Cult of Moreton Harwood. (KAC: A Girl's Best Friend) Circa 1983, K9 Mark III still lived with Sarah Jane, but, by chance, did not accompany her to Gallifrey. (DW: The Five Doctors) K9 accompanied Sarah to an archaeological dig in Egypt. (DWM: City of Devils) In the early 1990s, K9 assisted Sarah in investigating a supposedly haunted house. (VD: Housewarming)

In 1996, Sarah used K9 to hack into records and find Sam Jones' home address, and later to translate Lost Boy's speech. (EDA: Interference - Book One) K9 was briefly possessed by a malevolent entity, but was freed when Sarah accidentally electrocuted him. (ST: The Sow in Rut) K9 began slowly breaking down and eventually ended up deactivated in a cardboard box in Sarah's attic. (VD: Moving On) Hilda Winters had K9 dismantled and analysed. (BFSJS: Mirror, Signal, Manoeuvre)

Sarah, unable to find anyone to fix the robot, continued to carry K9 in the boot of her car, until a chance encounter with the Tenth Doctor in the mid-2000s resulted in K9 being restored to functionality. This served to be only temporary, however, as Mark III self-destructed in order to help the Doctor and his companions defeat a Krillitane invasion (DW: School Reunion).

K9 Mark IV

File:Small k9.png
K9 communicating with Sarah Jane Smith via a subspace portal linked to 13 Bannerman Road. (SJA: Invasion of the Bane)

After Mark III sacrificed himself to defeat the Krillitanes, the Doctor left a new model, Mark IV, for Sarah Jane Smith, just seconds after he departed in his TARDIS (It's not known if the Doctor quickly built Mark IV from scratch or had it in storage). K9 referred to himself as being rebuilt and improved, suggesting Mark IV possessed the same memories as Mark III. (DW: School Reunion) Though Sarah Jane didn't find this out right away, the Doctor had also placed some gifts in a panel in K9's side: sonic lipstick and a Scanner Watch that could detect alien life.

A year before Sarah Jane first met Maria Jackson, K9 Mark IV left Sarah Jane in order to stabilise a dangerous artificial black hole in space which had been created in Switzerland. He could only speak with Sarah Jane occasionally via a cabinet with a space-time link when the orbit of the black hole intersected with that of Earth and did not know when he would complete the job. (SJA: Invasion of the Bane) However, at times he was capable of returning to Earth very briefly during emergencies, and did so on two later occasions in order to render vital assistance. The first time, he fought Mr Smith in pitched battle to give Sarah Jane time to upload the Armaggedon Virus. (SJA: The Lost Boy) The second time, he quickly uploaded TARDIS base codes to Mr Smith, assisting the Tenth Doctor in returning Earth to its correct location in space. (DW: Journey's End)

After these events he went back monitoring the black hole, only to find an unidentified member of the Slitheen family attempting to steal him as part of a revenge plot against Sarah Jane, as she had foiled their plans in the past. K9 banished the Slitheen after reversing one of its attacks. (SJA: From Raxacoricofallapatorius With Love)

K9 was eventually able to return when Ship used the black hole as fuel. Though Sarah Jane, Luke, Rani and Clyde were happy to have K9 back, Mr Smith was not. (SJA: The Mad Woman in the Attic) K9 spent a lot of his time in Sarah Jane's attic at 13 Bannerman Road, but left in order to defeat Travist Polong. He was then present at Sarah Jane's wedding to Peter Dalton, where he helped the Tenth Doctor, Luke, Rani and Clyde defeat the Trickster. (SJA: The Wedding of Sarah Jane Smith) After helping defeat the Slitheen family, Clyde brought K9 to Park Vale Comprehensive School to help him with his test. He then helped defeat the Rakweed before returning home. (SJA: The Gift) K9 went to University of Oxford with Luke, but was able to restore Mr White's original programming through a mobile phone.(SJA: Goodbye, Sarah Jane Smith)

In 2056, Sarah left K9 to a boy who would later help Drax search for the Sixth Doctor, who was being held captive by Omega. (Search for the Doctor)

Living art simulation

During an encounter with the sentient painting, the Mona Lisa at the International Gallery, a simulation of K9 Mk IV was created when Mona Lisa was tricked into animating a drawing of K9 made by Clyde's inside a cloud of mystic drawing-animation energy. He subsequently defeated The Abomination, another evil painting-come-to-life, before disappearing as the Mona Lisa herself reverted to being an immobile painting. (SJA: Mona Lisa's Revenge)

K9 Mark 2

After Mark I sacrificed himself to destroy the Jixen warriors, Starkey retrieved his regeneration circuit and he was rebuilt as a much more advanced model, but had no memories of the Doctor. He stayed at the house of Alistair Gryffen, who ran tests on K9, but did not tell The Department. K9 tried to kill Starkey, as he was sprayed with Jixen genetic matter and therefore registered as a Jixen. Starkey managed to convince him that he was not an enemy and K9 gave him his dog whistle so that he can be summoned whenever needed. (K9TV: Regeneration) K9 and the team tracked down the surviving Jixen to Dauntless Prison and killed it, also facing a Meron and freeing the alien prisoners in the process. (K9TV: Liberation) K9 travelled with Starkey when he was on the run from the Department and then rescued Gryffen (who was kidnapped by a Korven), Gryffen later welcomed him and Starkey into his house. (K9TV: The Korven)

After he defeated Ahab, who tried to convince him he murdered Zanthus Pia. He became part of the K9 Unit, being made the responsibility of Gryffen and under the control of Department inspector June Turner. (K9TV: The Bounty Hunter) He then foiled Inspector Drake's plan to control the population using Cerulium (K9TV: Sirens of Ceres) and experienced fear. (K9TV: Fear Itself) He later aided in the defeat of echoes of Gryffen's family (K9TV: The Fall of the House of Gryffen), Orthrus, a duplicate of him created by Drake to frame him, (K9TV: Jaws of Orthrus) and the Bodach. (K9TV: Dream-Eaters) He was then met by Nehetka and Geb of the Anubians, a race his previous incarnation liberated. He was so obsessed with regaining his lost memories that he didn't realise Gryffen, Starkey and Jorjie's takeover by the Anubians. He soon found out when the Anubians attacked the Department, with the help of Darius he was soon able to defeat him. (K9TV: Curse of Anubis)

He later helped Starkey fight the Oroborus, (K9TV: Oroborus) freed the Medes (K9TV: Alien Avatar) and help one of the last Aeolians find her mate. (K9TV: Aeolian) He then saved a Centuripede and her young from being killed by Drake (K9TV: The Last Oak Tree) and absorbed the Hunger swarm which threatened to devour Earth. (K9TV: Black Hunger) He and Starkey then went through the STM to 1963 where they rescued Jorjie and saved Darius' great-grandfather William Pike from being arrested and erasing Darius from history. (K9TV: The Cambridge Spy) He enlisted the help of the Ukkan librarian Yssaringintinka to rescue Starkey who was trapped on the planet Urlic. (K9TV: Lost Library of Ukko) He later helped Birdie, a CCPC which implanted human DNA escape from the Department. (K9TV: Mutant Copper) He then discovered the last of the Etydions (K9TV: The Custodians) and taught Taphony how to be a friend. (K9TV: Taphony and the Time Loop)

Either Inspector Thorne or Lomax found out about K9's regeneration circuit and decided to acquire it. Thorne joined forces with Freddie Maxwell, owner of Crashclub involving old robots being made to fight. K9 went undercover as a gladiator and made friends with the robot clowns Chuckles and Boris. He was called to fight the Pain-Maker who was laced with the explosive Solarmite, when he was set to self-destruct K9 detected this and fled the explosion. (K9TV: Robot Gladiators) In an attempt to regain his memory and find out his connection to the STM, K9's archieve was scrambled and directives from the STM almost caused him to self-destruct and lose all his memory. However with help of Gryffen and Starkey he was able to override the directives. (K9TV: Mind Snap) He later helped Gryffen find the STM's temporal stabiliser from the fallen angel crashsite in Canada where it was revealed to be Korven technology. (K9TV: Angel of the North) He later stopped haywire CCPCs when The Last Precinct's plan backfired. (K9TV: The Last Precinct)

After this he was tricked by Thorne to give him his regeneration unit in return for a lost memory chip, however this turned him into a bomb which would make him self-destruct upon encountering Jixey however Starkey helped him disarm himself. (K9TV: Hound of the Korven) K9 Mark 2's brief life was almost tragically cut short when after the fall of the Korven invasion force, Thorne sent the Trojan to kill the extremely weakened K-9 who was only able to defeat it by burning out his powercore and exhausting all his energy. As his regeneration unit was in the Trojan, K9 seemingly died back at the mansion after his companions bade farewell to him. However his regeneration unit homed in on it's master at the last minute and managed to resurrect him giving the frisky pup a new lease on life. The regeneration unit restored his old dog collar so he could celebrate the joyful occasion to the full as he flew off to more adventures bristly with life. (K9TV: Yjr Eclipse of the Korven)


Personality

K9 had a very consistent personality, across the models that had some contact with the Doctor. He had a polite, formal manner with just a hint of pedantry bordering on condescension. Though he often displayed feelings such as sorrow (DW: The Invasion of Time) and self-regard (DW: School Reunion), he often stated that he had not been programmed to have emotions. (SJA: Invasion of the Bane)

He did not use contractions just as "you've" for "you have" and addressed others by titles such as "Master", "Mistress", "Doctor-Master" (to refer to the Doctor) or "Young Master" (Adric, Starkey and in one instance Clyde). Though he did not seem to resent his subordinate status, he tended to side with the Doctor's companions over the Doctor himself and at times showed a dark side, regarding other artificial intelligences with contempt (DW: The Invasion of Time, SJA: The Wedding of Sarah Jane Smith, K9TV: Robot Gladiators) and relishing a brief chance to act as a figure of power. (MA: The Well-Mannered War)

K9 at the beach. (DW: The Leisure Hive)

He usually did not engage in computer-like literal thinking, though on one occasion he followed Romana's instructions to "forget it" to the letter and erased all his knowledge of tennis from his memory banks. (DW: The Stones of Blood)

Because of him having great intelligence, he liked to bore people with facts and did not immediately stop when asked as he did to Leela on Pluto. When being told that he would have to stay behind in the TARDIS, K9 often argued, giving the Doctor reasons why he should go such as "[he] would be a good dog." This showed K9's willingness to assist the Doctor. He was also showed to have great intelligence and skill at chess as he was able to beat the Doctor in six moves (but this may only have been because he was programmed with all chess games since 1886). (DW: The Sun Makers, The Androids of Tara) K9 was revealed to have an aggression mode. (DW: State of Decay)

K9 Mark 2 had some obvious commonalities with the Mark I that had preceded him. However, as he had almost completely lost his personal memories, he was forced to reacquaint himself with the world around him. Toward this end, he downloaded thousands of human movies onto his memdrive, which peppered his speech with 20th and 21st century English colloquialisms that his "brothers" did not typically employ. (K9TV: Alien Avatar) Despite his negative opinions on emotions, (K9TV: Mutant Copper) he asked questions about some such as fear (K9TV: Fear Itself) and love (K9TV: Aeolian). He even used some such as commonly laughing when he saved the day, feeling fear (K9TV: Fear Itself) and being angered. (K9TV: Regeneration)

Features

File:K-9 Mark IV.jpg
The new and improved fourth version of K9. (DW: School Reunion)

The mechanics of K9 Mark I included rotating ear-probes, telescopic 'eye' probe, extendable nose concealing a powerful laser weapon, 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. Around K9's neck was a tartan collar, from which hung a silver disk. (DW: The Invisible Enemy) He was later modified so that he could fly through the Vacuum of space. (K9TV: Curse of Anubis)

After K9 Mark I was left behind with Leela on Gallifrey, The Doctor built a improved K9 Mark II. While the cosmetic changes were minimal (including the new metallic charcoal paint-work), in terms of series continuity K9's character underwent a vast change. Gone was the product of 5000 AD technology, as was the case with Marius's version. This new K9 was a product of the Doctor's own technology and values. The gun was now only capable of stunning, not killing and K9 now responded to a dog-whistle. K9 also featured a vast memory-bank, seemingly a mixture of the Mark One model, the Doctor's own memory and knowledge, and that of the TARDIS. (DW: The Invasion of Time)

When the Doctor left Sarah Jane Smith on Earth, he created K9 Mark III to be Sarah's new companion. The new mechanics of K9 Mark III included larger wheels in conjunction with a front and back-wheel drive. K9 was also given a brand new coat of paint (this time a metallic-blue) and a handle on the top of the shell to make carrying him easier. (KAC: A Girl's Best Friend)

When the Doctor created K9 Mark IV to replace K9 Mark III, he added a shiny metallic blue paint job and a number of improvements over Mark IV including an omniflexible hyperlink facility. (DW: School Reunion) Later, though, K9 reverted to his old, dark green color. (SJA: Invasion of the Bane) In battling Mr Smith (and following the battle) K9 displayed a teleport facility and utilizes a laser weapon similar to the previous K9s'. (SJA: The Lost Boy)

After K9 Mark I regenerated into K9 Mark 2, he was radically altered in design. His ear probes were replaced with larger silver aerials, a set of blue lights on his head flashed when he spoke. Most of his body was dark silver in colour and a silver dog bone was located under his neck. He seemed to have the same capabilities as Mark I but was presumably more advanced. (K9TV: Regeneration)

After K9 Mark 2's apparent rejuvenation, he looked similar to his predecessor but with a bright blue coat of paint and K9 Mark I's old collar. (K9TV: The Eclipse of the Korven)

Marks

Behind the scenes

  • In an interview, the writers originally wanted to name K9 "Pluto", after the Disney character; however, Disney refused permission.
  • K9 was also a contestant on the Doctor Who special of The Weakest Link.
  • K9 was referenced on the American tv show Community, as the character Abed describes himself as a dispassionate observer in the style of various other tv/movie characters.

External links