User:Twelfth Doctor/Psychic Paper

'''This is my sub-page for working on lengthy article rewrites to conform to in-universe policy. Please do not edit it without permission. Many thanks.

Things to remember:'''


 * In-universe only
 * Chronological order.
 * Quotes where appropriate and available.
 * Images where appropriate and available.
 * Any pertinent trivia information.
 * Full references and sources.

Features
"Oi! Listen, in the year 5000, this was cutting edge!"

- The Tenth Doctor

The mechanics of K-9 Mark I included rotating ear-probes, telescopic 'eye' probe, extendable nose, flashing lights on the top and the 'eye' panel, waggling tail antennae, and ticker-tape tongue. The head could also move up and down. The shell was painted in gold/grey metallic. Around K9's neck was a tartan collar, from which hung a silver disk. (DW: The Invisible Enemy)

After K-9 Mark I was left behind with Leela on Gallifrey, The Doctor built a improved K-9 Mark II. While the cosmetic changes were minimal (including the new metallic charcoal paint-work), in terms of series continuity K9's character underwent a vast change. Gone was the product of 5000 AD technology, as was the case with Marius's version. This new K9 was a product of the Doctor's own technology and values. The gun was now only capable of stunning - not killing - and K9 now responded to a dog-whistle. K9 also featured a vast memory-bank, seemingly a mixture of the Mark One model, the Doctor's own memory and knowledge, and that of the TARDIS. (DW: The Invasion of Time)

"Why does he look so... disco?"

- Rose Tyler on K-9 Mark III

When the Doctor left Sarah Jane Smith on Earth, he created K-9 Mark III to be Sarah's new companion. The new mechanics of K-9 Mark III included larger wheels in conjunction with a front and back-wheel drive. (K-9 was given a brand new coat of paint (this time a metallic-blue) plus a handle on the top of the shell to make carrying him easier. (KAC: A Girl's Best Friend)

When the Doctor created K-9 Mark IV to replace K-9 Mark III, he added a shiny metallic blue paint job and a number of improvements over Mark IV including an omniflexible hyperlink facility. (DW: School Reunion) Later, though, K-9 reverted to his old, dark green color. (SJA: Invasion of the Bane) In episode 2 of The Lost Boy Sarah Jane unleashes K-9 Mark IV to battle Mr Smith. Before and after the battle K-9 displays a teleport facility and utilises a laser weapon similar to the previous K-9s'. (SJA: The Lost Boy)