Template:Transmat:Technology
From Tardis Wiki, the free Doctor Who reference
K9 was the designation given to a series of intelligent, dog-like robots who served as companions to Professor Marius, the Fourth Doctor, Leela, Romana, Sarah Jane Smith, Luke Smith, and Starkey. K9 Mark I, II, III, and IV addressed whomever is directing them as "Master" or "Mistress" depending upon gender, and used the formal "affirmative" and "negative" rather than "yes" and "no". They were programmed to be both loyal and logical, with a penchant for taking orders literally, almost to a fault.
