ADVENTURE TIME DOCTOR WHO SERIAL

The character subsequently transitioned into spin-off territory. By 1981, each of the two models of K9 which travelled alongside the Doctor had been left with one of the Doctor's female companions. In these stories, K9 proved useful for the powerful laser weapon concealed in his nose, his encyclopaedic knowledge and his vast computer intelligence.

The first two incarnations of the character travelled alongside the Fourth Doctor (portrayed by Tom Baker) until 1981.

ADVENTURE TIME DOCTOR WHO SERIAL

Within the series' narrative, K9 is a robot dog acquired by Doctor Who's title character in the 1977 serial The Invisible Enemy. The character was created by Bob Baker and Dave Martin, to whom rights to the character still belong consequently, Baker's spin-off series K9, which is not BBC-produced, cannot directly reference events or characters from Doctor Who, though it attempts to be a part of that continuity. Voice actor John Leeson has provided the character's voice in most of his appearances, except during season 17 of Doctor Who, in which David Brierley temporarily did so. There have been at least four separate K9 units in the series, with the first two being companions of the Fourth Doctor.

Although not originally intended to be a recurring character in the series, K9 was kept in the show following his first appearance because he was expected to be popular with younger audiences. K9 has also been a central character in three of the series television spin-offs: the one-off K-9 and Company (1981), The Sarah Jane Adventures (2007–2011) and K-9 (2009–2010). K9, occasionally written K-9, is the name of several fictional robotic canines ( dogs, the name being a pun on the pronunciation of 'canine') in the long-running British science fiction television series Doctor Who, first appearing in 1977.

Adventure time doctor who