T-X / Terminatrix
The T-X model is a gynoid assassin with a human-female appearance. The T-X has the ability to assume the appearance of other characters; therefore, several other cast members occasionally portrayed the T-X throughout the film.
Terminator 3: Rise of the Machines
She was sent by Skynet to the year 2004 to eliminate John Connor's lieutenants and ensure that Skynet will rise without any interference. Among her targets is John's future wife, Kate Brewster, and her father, Robert—who is destined to become Connor's father-in-law and is Skynet's primary creator. The T-X arrives in a store, kills a woman, assumes her appearance, then steals the car and terminates three targets in the process....