History Series / K9

* HybridMonster: In the finale, Thorne presents Trojan, a supersoldier created from DNA of every species in the series. This becomes Trojan's downfall when K9 uses the Jixen battle shriek to cause Trojan's Jixen and Meron DNA to fight each other.

* BiggerBad: Lomax to Thorne.

* TheBusCameBack: According to WordOfGod, the version of K-9 featured in the series was the same version of K-9 who appeared on ''Series/DoctorWho'' in the 1978 story "[[Recap/DoctorWhoS15E6TheInvasionOfTime The Invasion of Time]]", who at the conclusion of that story stayed behind on Gallifrey. The parent series replaced him with K-9 Mark II. A Mark III and IV were later introduced but up until this series, Mark I never returned.

** Darius draws some inspiration from both [[series/{{TheSarahJaneAdventures}} Clyde Langer]] and [[series/{{Torchwood}} Owen Harper]].

--->'''Jorjie''': "Does he remind you of someone?"

** Professor Gryffen is arguably one for [[LiveActionTelevision/DoctorWho the Doctor]], both being chatty scientist who provides the most help to the crew. Most likely intentional as the actual Doctor couldn't be used. Interestingly the Seventh Doctor was referred to as "Professor" by Ace.

* TheBusCameBack: According to WordOfGod, the version of K-9 featured in the series was the same version of K-9 who appeared on ''Series/DoctorWho'' in the 1978 story "The Invasion of Time", who at the conclusion of that story stayed behind on Gallifrey. The parent series replaced him with K-9 Mark II. A Mark III and IV were later introduced but up until this series, Mark I never returned.

* ClipShow: In #22, "Mind Snap", K9 manages to get his memory erased, so Starkey and Gryffen have to prompt him to remember their adventures. Oddly, he retrieves files of things that happened a) while he was somewhere else, b) while he was blown up, and c) in someone else's dreams! Discounting brief flashbacks, this is the first time in the history of the ''Doctor Who'' franchise that producers have had to resort to this format of episode.

''K9'' (2009-2010) is a ''Series/DoctorWho'' spin-off based on everyone's favourite robot dog, who fell through spacetime to end up in eccentric Professor Alistair Gryffen's laboratory/mansion in mid-21st-century London. Sacrificing himself to save the humans from something that followed him through the portal, K9 regenerates into an updated design... but with no memory of how he got to Gryffen's lab. He's quickly introduced to Gryffen, a physicist researching space-time manipulation (with an eye towards resurrecting his lost wife and children); Gryffen's petulant assistant, Darius Pike; rebellious middle-class scion Jorjie Turner (pronounced "Georgie"); and teen dissident Starkey, with whom K9 forms a bond.

''K9'' (2009-2010) is a ''Series/DoctorWho'' spin-off based on everyone's favourite robot dog, who fell through spacetime to end up in eccentric Professor Gryffen's laboratory/mansion in mid-21st-century London. Sacrificing himself to save the humans from something that followed him through the portal, K9 regenerates into an updated design... but with no memory of how he got to Gryffen's lab. He's quickly introduced to Gryffen, a physicist researching space-time manipulation (with an eye towards resurrecting his lost wife and children); Gryffen's petulant assistant, Darius; rebellious middle-class scion Jorjie (pronounced "Georgie"); and teen dissident Starkey, with whom K9 forms a bond.

26 episodes of the first series have long since aired, with no sign of second season.

* UsefulNotes/BritishCoppers: ''Robotic'' British coppers.

* {{Cyberspace}}: Exists, but we haven't seen it extensively used. It ''is'' used as punishment.
** And it can be fairly mild, or almost impossible to endure. Thorne uses Darius's father to blackmail him, by promising an easier time in the VR prisons. Starkey, who was in and out of facilities growing up, says they 'mess with your head'.

* {{Expy}}/SuspiciouslySimilarSubstitute: Professor Gryffen is arguably one for [[LiveActionTelevision/DoctorWho the Doctor]], both being chatty scientist who provides the most help to the crew. Most likely intentional as the ACTUAL Doctor couldn't be used. Interestingly the Doctor was referred to as "Professor" by Ace.
** [[spoiler: The Korven are this for the Daleks, being a fearsome alien race intent on destroying humanity and conquering the universe, though they are not AS strong as the daleks]]

* IdenticalGrandson: In #16, Jorjie, Starkey and K9 meet Darius' great-grandfather, William Pike, who looks exactly like him. They also meet Agent Barker who is identical to Thorne, who does not appear in this episode, but Jorjie [[LampshadeHanging lampshades]] this to Starkey.

* TheNthDoctor: Producer Bob Baker decided to take a leaf out of the parent show's book and had K9, just like his master, sacrifice himself then regenerate into a brand new model.
** Although he's quick to point out that this is still K9 Mark One, just in a new body.

** Gryffen's actor is Canadian. In "Taphony and the Time Loop", it's revealed that Gryffen was born in Canada.

* TheUnfavorite: Darius. In the seventh episode Starkey is told he's the the closest thing to a son Gryffen has. Darius, who's been looking after Gryffen for two years, is standing right there. Jorjie also prefers Starkey over Darius.
** There's also the fact that as far as we've seen, Darius sleeps in his car. Granted, that might be because he's insanely protective of her, but it still seems unfair when Starkey gets a bedroom. And a bed.

* TwoTeacherSchool: Apart from the Department Mooks, we only ever see June - head of the Alien Threat department - and Drake, later replaced by Thorne, ostensibly head of non-alien related security issues. Both Drake and Thorne frequently stepped outside their duties, usually in some kind of attempt to catch/destroy/enslave K9. They had an offscreen boss, Lomax, who was mostly used as a threat by June to get Drake or Thorne to back down.
** Lomax made a few appearances throughout the series, as a silhouetted government official conferring with either Drake, Thorne or June with a distorted voice. [[spoiler:It is later revealed that he is a Korven, and the mastermind behind their planned invasion of Earth]]

* ZombieApocalypse: Well, in the ninth episode, an incorporeal alien race called the Bodach sends the whole of London (bar the team, although June is the Avatar and Darius falls eventually) asleep and into an army of sleep walkers.

''K9'' (2009-2010) is, of course, a ''Series/DoctorWho'' spin-off based on everyone's favourite robot dog, who fell through spacetime to end up in eccentric Professor Gryffen's laboratory/mansion in mid-21st-century London. Sacrificing himself to save the humans from something that followed him through the portal, K9 regenerates into an updated design... but with no memory of how he got to Gryffen's lab. He's quickly introduced to Gryffen, a physicist researching space-time manipulation (with an eye towards resurrecting his lost wife and children); Gryffen's petulant assistant, Darius; rebellious middle-class scion Jorjie (pronounced "Georgie"); and teen dissident Starkey, with whom K9 forms a bond.

* {{Expy}}/SuspiciouslySimilarSubstitute: Professor Gryffen is one of [[LiveActionTelevision/DoctorWho the Doctor]], both being chatty scientist who provides the most help to the crew. Most likely intentional as the ACTUAL Doctor couldn't be used. Interestingly the Doctor was referred to as "Professor" by Ace.

All 26 episodes of the first series have long since aired and a second series is apparently in development.

* TheBusCameBack: According to WordOfGod, the version of K-9 featured in the series is the same version of K-9 that last appeared on ''Series/DoctorWho'' in the 1978 storyline "The Invasion of Time", after which it was subsequently left behind on Gallifrey. The parent series replaced him with "K-9 Mark II" and later Marks III and IV were introduced into spinoffs with Sarah Jane Smith.

* {{Expy}}/SuspiciouslySimilarSubstitute: Professor Gryffen is one of [[LiveActionTelevision/DoctorWho the Doctor]], both being chatty scientist who provides the most help to the crew. Most likely intentional as teh ACTUAL Doctor couldn't be used, interestingly the Doctor was referred to as "Professor" by Ace.

* DawsonCasting: Keegan Joyce was twenty one playing fourteen year old Starkey.
* DevelopmentHell: Season 2 has been in pre-production for five years, as of 2015.
* DivorcedInstallment: This is the one TV show in the Franchise/{{Whoniverse}} that has absolutely no connection to the BBC. As such, it isn't allowed to mention anything from ''Series/DoctorWho'', ''Series/{{Torchwood}}'' or ''Series/TheSarahJaneAdventures'', which have had storylines and characters run through one another.

* WholePlotReference: A small team led by a former companion of the Doctor, tasked with looking after a phenomenon from which entities from across space and time fall through, but which travelling through from this end is far more difficult. [[Torchwood Where have we heard this one before?]]

* TheBusCameBack: According to WordOfGod, the version of K-9 featured in the series is the same version of K-9 that last appeared on ''DoctorWho'' in the 1978 storyline "The Invasion of Time", after which it was subsequently left behind on Gallifrey. The parent series replaced him with "K-9 Mark II" and later Marks III and IV were introduced into spinoffs with Sarah Jane Smith.

* ShoutOut: When Professor Gryffen tries to access K-9's memory, The first few notes of [[ThemeTune the Doctor Who theme plays]] after he tries to access K-9's memory banks. Neither Gryffen nor K-9 have a clue about the songs origins.

* ConMan: Darius is a mild example. So far we've seen him buy the wrong parts for Starkey and charge him anyway, find a way out of the city despite being under surveillence, stall two aliens bent on his destruction, and nick - ''pick'' - some food for Gryffen.

* DivorcedInstallment: This is the one TV show in the {{Whoniverse}} that has absolutely no connection to the BBC. As such, it isn't allowed to mention anything from ''Series/DoctorWho'', ''Series/{{Torchwood}}'' or ''Series/TheSarahJaneAdventures'', which have had storylines and characters run through one another.

* NotThatKindofDoctor: As Gryffen points out twice in The Custodians, he's "not a doctor-doctor." Since the issue was a virtual reality helmet that was turning children into aliens, he was able to help anyway.

* TheHustler: Darius is a mild example. So far we've seen him buy the wrong parts for Starkey and charge him anyway, find a way out of the city despite being under surveillence, stall two aliens bent on his destruction, and nick - ''pick'' - some food for Gryffen.

* ClipShow: In #22, "Mind Snap", K9 manages to get his memory erased, so Starkey and Gryffen have to prompt him to remember their adventures. Oddly, he retrieves files of things that happened a) while he was somewhere else, b) while he was blown up, and c) in someone else's dreams!