K9 Mark II

K-9 Mark II was the second K-9.

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Mark II was constructed as a replacement for the Doctor after Mark I, decided to stay on Gallifrey with Leela (DW: The Invasion of Time)


 * We do not know who constructed K-9 Mark II, thought it seems likely that Mark I could have made a duplicate of himself to give to the Doctor.

This version of K-9 accompanied the Doctor and his new friend Romana on their quest to locate the segments of the Key to Time (DW: The Ribos Operation), however the swampy terrain of Delta III made it impossible for him accompany them there. At the conclusion of the quest, the Shadow turned K-9 to his evil will, during which time he assumed a sinister personality. (DW: The Armageddon Factor)

The Doctor found that, K-9 had gotten programmed with laryngitis and had lost his voice. (DW: Destiny of the Daleks). During a subsequent adventure, he remained patiently in the Doctor's TARDIS, which would imply that his voice had not yet returned. (DW: City of Death)

After the return of voice, it sounded quite different and remained so for a number of adventures (DW: The Creature from the Pit). However, later his familiar voice returned. (DW: The Leisure Hive)

Damaged by the time winds, K-9 Mark II could not cross back into N-Space with the Doctor, so decided to stay behind at the Gateway with Romana, to help her free the remaining Tharils from slavery. (DW: Warriors' Gate)

During Romana's term as Lady President of Gallifrey, K-9 Mark II served as her aide and advisor. (NA: Lungbarrow)