also List of Doctor Who robots References External links K9 on the BBC's Doctor Who website ("New Series") K9 on the BBC's Doctor Who website ("Classic Series") K9 being introduced on Blue Peter in 1977 "Affirmative, Master: All You Ever Wanted To Know About K9", by Jon Preddle ("Time Space Visualiser" issue 41, Oct 1994) A K9 game, on the BBC's official Doctor Who website Articles about multiple fictional characters Television characters introduced in 1977 Doctor Who companions Doctor Who audio characters Fictional robotic dogs The Sarah Jane Adventures characters Television episodes about robots Fictional characters from the 6th millennium Male characters in television simple:Doctor Who companions#K-9