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TARDIS Index File

K9 Mark III

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K9 Mark III
Old K9 Mark III front
Species: Robot
First seen in: Inter-Galactic Cat
Appearances: see list
Main voice actor: John Leeson
K9 models
BBC models Mark IIIIIIIV
Baker/Martin models "BBV K9"Mark 2Orthrus

K9 Mark III was the designation given to the third known version of the robot K9. This version was given by the Fourth Doctor as a present to his former companion, Sarah Jane Smith. The Doctor left him in a crate in her flat in Croydon in 1978, but she did not actually open the crate until she visited Moreton Harwood in December 1981.

This model of K9 experienced an unfortunate lifetime, breaking down to the point of deactivation during his time alongside Sarah Jane, and sat motionless in an attic for many years because his futuristic inner-workings could not be shared with other humans. Though Mark III was later given the repairs he needed from the Doctor, he remained in poor condition and did not get to enjoy his reactivation for long. In a sacrificial final act, K9 Mark III valiantly gave up his life to eliminate a horde of Krillitanes preying on the human race.

Biography Edit

Travels with the Doctor and Adric Edit

After the Doctor had left K9 Mark II to Romana as a gift, K9 Mark III travelled with the Doctor and Adric[1] for a short time. (PROSE: Inter-Galactic Cat, Conundrum, Planet of Paradise, Plague World, Just a Small Problem)

With Sarah Edit

The Doctor left K9 for Sarah Jane Smith in 1978 at the only address he had for her: the home she had shared with her aunt, Dr Lavinia Smith, on Hill View Road in South Croydon and left a message with K9: he was to inform Sarah Jane that he was a gift from the Doctor and to "give Sarah Jane Smith my fondest love, tell her I shall remember her always." (TV: The Hand of Fear, A Girl's Best Friend) Sarah Jane had already moved out of her aunt's home by that time and was travelling extensively. Unaware of its contents, Lavinia stored the shipping crate in her attic until 1979 when she purchased a manor house in Moreton Harwood and relocated there. She had the crate moved to the drawing room in anticipation of Sarah Jane's Christmas visit in 1981 and her own departure for a lecture in the United States. Sarah Jane and her aunt's ward Brendan Richards discovered and opened the crate on 18 December 1981. Two days later, K9 helped Sarah Jane defeat Moreton Harwood's Hecate Cult. (TV: A Girl's Best Friend)

K9 and Brendan

K9 and Brendan (TV: A Girl's Best Friend)

After this happened, Sarah, Brendan, Lavinia and K9 continued to investigate and stop other cults and witchcraft covens present in Britain. (PROSE: Powerstone, The Shroud of Azaroth, Hound of Hell, The Monster of Loch Crag, Horror Hotel, The Curse of Kanbo-Ala)

SJSK9FiveDocs

K9 tries to warn Sarah about the Time Scoop. (TV: The Five Doctors)

Circa 1983, K9 Mark III "lived" with Sarah Jane in a semi-detached house; their gate bore a "beware of dog" sign. Sarah Jane dismissed his sense of danger and declined to either stay home or take him with her. As a result, he did not accompany her to Gallifrey. (TV: The Five Doctors) Later, K9 went with Sarah to an archaeological dig in Egypt. (COMIC: City of Devils) In the early 1990s, K9 assisted her in investigating a supposedly haunted house. (PROSE: Housewarming) In 1995, K9 assisted Sarah Jane in contacting Alistair Gordon Lethbridge-Stewart with his large databank of telephone numbers. (PROSE: Downtime) In 1996, Sarah used K9 to hack into records and find Sam Jones' home address, and translate Lost Boy's speech. (PROSE: Interference - Book One)

Breakdown Edit

K9 was briefly possessed by a demonic pig spirit, but was freed when Sarah accidentally electrocuted him. (PROSE: The Sow in Rut) K9 began slowly breaking down and Sarah Jane was not able to repair K9's future technology. She did not show him to anyone else out of fear that revealing his technology could rewrite human history. Eventually, when his dilapidated state grew too advanced, K9 ceased to function altogether. His last act was to protect his mistress' home, by immobilizing two burglars and calling the police, before Sarah got home. (PROSE: A Dog's Life)

Having essentially given up on being able to repair him, she relegated him to a cardboard box in her attic. (TV: School Reunion; PROSE: Moving On) Later, Hilda Winters had K9 dismantled and analysed. (AUDIO: Mirror, Signal, Manoeuvre)

Sacrifice Edit

K9 iii last stand

K9 faces the Krillitanes. (TV: School Reunion)

In early 2007, the Tenth Doctor was able to repair K9 sufficiently to restore basic functionality restricted to minimal power. He used K9 to identify the intelligence-enhancing oil used in the school's chips as Krillitane oil.

When Mickey Smith woke K9 to break into the school during the ensuing fight with the Krillitanes, K9 pointed out they were in a car that could be driven straight through the glass doors, which Mickey promptly did. As the Doctor, Rose Tyler, Sarah Jane, Mickey and Kenny were cornered by the Krillitanes, K9 rescued them and delayed the Krillitanes until he ran low on power and was left alone. Short on power with only one shot of his laser remaining, K9 needed to be right next to a vat of Krillitane oil, which was now lethal to the Krillitanes, for "maximum impact"; K9 blew up the school along with himself. (TV: School Reunion)

According to K9 Mark IV, as relegated to Sarah Jane, the Doctor rebuilt Mark III into Mark IV with "new omniflexible hyperlink capabilities". (TV: School Reunion)

In 2008 onward, Sarah Jane kept a photograph of K9 Mark III and her younger self on the wall of her attic study at 13 Bannerman Road, Ealing, along with portraits of Alistair Gordon Lethbridge-Stewart and Harry Sullivan. (TV: Invasion of the Bane)

Features Edit

Mark III included some improvements over past models. The new mechanics of K9 Mark III included larger wheels and a front and back-wheel drive. K9 also had a brand new coat of paint (this time a metallic-blue), (TV: A Girl's Best Friend) though after Sarah Jane relegated him to the attic when he broke down, Mark III rusted to some extent. The paint on his metal casing had faded and chipped away a bit by the time she brought him to the Tenth Doctor to restore some of his functionality. (TV: School Reunion) Mark III also had a handle on the top of the shell to make carrying him easier. (TV: A Girl's Best Friend) Although Sarah Jane indeed carried K9 Mark III to load him into and out of her car, (TV: A Girl's Best Friend) the Eleventh Doctor later implied that Mark IV was not the first to be capable of hovering. (TV: The Power of Three)

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)

K9 ran on an electron-fusion nuclear battery. Though K9 usually recharged himself when necessary, Sarah Jane had occasionally done so by clipping jump leads to his antennae. (PROSE: Housewarming)

Technology Edit

K9 was an advanced computer built in the shape of a robot dog. Among the technology included were a tri-state bus driver, a universal asynchronous receiver/transmitter and holographic memory. He was powered by a self-charging nuclear battery. K9 Mark III was programmed with a wide variety of technical knowledge and scientific data which included, among other things, horticulture. K9 could also provide data printouts of any information requested from his memory banks. (TV: A Girl's Best Friend)

Behind the scenes Edit

K9 and Company Edit

In the original outline to K9 and Company, it would have been eventually revealed that K9 Mark III was actually sent by and under the control of the Master, but this element never made it to the screen. [2] The idea of a mechanical companion to Sarah Jane being partially controlled by an enemy was recycled with Mr Smith in The Sarah Jane Adventures story The Lost Boy.

A publicity photograph of Sarah Jane and K9 Mark III from K9 and Company was displayed in a pan across the 13 Bannerman Road attic at the start of Invasion of the Bane, being only the second use of classic era footage in the revived era, the first being a photo of Brigadier Lethbridge-Stewart an instant earlier.

Other matters Edit

  • The Sixth Doctor make-your-own-adventure novel Search for the Doctor, published in 1986, features a descendant of Sarah Jane in the 2050s inheriting K9 Mark III. This book was published two decades before School Reunion and the destruction of this K9 unit.

Footnotes Edit

  1. In fact, the model number of K9 is not mentioned in these stories. It's merely logical inference that the K9 depicted is the Mark III, since the stories are clearly post-Warriors' Gate, but pre-Logopolis
  2. http://www.bbc.co.uk/doctorwho/classic/episodeguide/k9/detail.shtml

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