Doctor Who Galleries Index

K9 is a robotic dog who first appeared in the Tom Baker episode "The Invisible Enemy" in 1977 and remained a companion until his departure in 'The Invasion of Time' in 1978. Immediately following that episode, the Doctor unpacked 'K9 Mark II' who remained a companion until his departure in "Warrior's Gate" in 1981. K9 Mark III appeared in the single spin-off episode "K9 and Company" in 1981 as a gift to former companion Sarah-Jane Smith, with subsequent appearances in "The Five Doctors" in 1983 and his destruction in the 2006 episode "School Reunion". At the end of "School Reunion" Sarah-Jane was gifted K9 Mark IV who went on to appear on and off in The Sarah Jane Adventures.

A new version of K9 was introduced in his own non-Doctor Who series in 2010 for one season of 26 episodes. I have all these books in my collection.

Target Books
Part of "The Companions of Doctor Who Series of Books
Novelisation of the spin-off episode "K9 and Company"
featuring K9 and Sarah-Jane Smith


K9 and Company


The Adventures of K9 and Other Mechanical Creatures

Sparrow Books
The Adventures of K9

(No 1) 1980

K9 and the Time Trap
(No 2) 1980

K9 and the Beasts of Vega
(No 3) 1980

K9 and the Zeta Rescue
(No 4) 1980

K9 and the Missing Planet

Meteoric Books


The Essential Book of K9

K9 Megabytes (Story Collection)

K9 Official Page on FaceBook



The K9 Annual 1983