K-9 is a fictional character portrayed by John Leeson in the TV series Doctor Who.
In the first episode they appeared in, titled School Reunion (season 2), they were 63 years old.
They appear in 2 episodes out of a total of 166 aired
Episodes2
School Reunion
episode S2.E3 october 2006The Krillitanes - aliens with a mix-and-match physiology - are trying to crack the 'God-Maker', a paradigm to give them ultimate power. They are using children as a computer, and only the Doctor and Rose, re-united with Sarah Jane Smith and K9 can prevent them from becoming masters of time and space.Journey's End
episode S4.E13 august 2008In the wake of Davros' threat to destroy the existence of the Universe itself, the Doctor's companions unite to stop the Dalek empire. Which one will die by the prophecies and what will the fate be for the Doctor?
- School Reunion
- Journey's End