Karra

Karra was a Cheetah Person who originally had a human or near-human form.

Biography
Karra first appeared to Ace mounted on a horse in a playground in Ace's home town of Perivale. She transported Ace to the Cheetah World, where Ace watched her kill Stuart who had also been abducted from Perivale. Ace threw a rock at Karra's head, hurting her. (TV: Survial)

Karra's wounds soon healed, thanks to the power of the planet. Respecting Ace now, and intrigued by Captain Sorin's s shiny cap insignia on Ace's jacket, (TV Survial, The Curse of Fenric) Karra introduced herself and offered Ace a new life with the Cheetah People, a prospect which tempted her. (TV: Survial)

Karra returned to Perivale, scared off 's minions there and readied to attack him. He stabbed her with a large animal tooth. She reverted to her old form for a few moments before dying. A Cheetah Person appeared to bear her body away. (TV: Survial)

Behind the scenes
Karra's demise was the last death scene shown in the "classic era" of Doctor Who. It followed that of Midge, the last human death of the era.