Karra

Karra originally had a Human or near-Human form. She first appeared to Ace mounted on a horse in a playground in Ace's old home town of Perivale. Karra transported Ace to the Cheetah World and there she killed Stuart, also abducted from Perivale. Ace threw a rock at Karra's head, hurting her, though she soon healed thanks to the power of the planet. Respecting Ace now, Karra introduced her name to Ace and offered her a new life with the Cheetah People, a prospect which tempted her.

At last, Karra returned to Perivale, scared off the Master's minions there and readied to attack him at which point he stabbed her to death with a knife. She reverted to her old form for a few moments before dying at which point a Cheetah Person appeared to bear her body away. (DW: Survival)