Read more about T-X (The Terminatrix) at: Wikipedia
Official Site: Warner Bros. Entertainment
The T-X, nicknamed the "Terminatrix" by John Connor, is a fictional gynoid assassin. It is the main antagonist in the movie Terminator 3: Rise of the Machines. It was primarily portrayed by Kristanna Loken. 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. This ability to change shape is similar to that of the T-1000, the main antagonist of Terminator 2: Judgment Day.
The T-X was designed in Stan Winston studios, where it was considered particularly challenging to design, as the script required a character capable of holding its own against the original Terminator. Originally, the T-X's endoskeleton was meant to convey an androgynous shape which would permit the cyborg to assume the superficial traits of both men and women, though later designs veered on it being more feminine. The final, approved T-X design was done by Aaron Sims, who designed it entirely on computer through a mixture of Photoshop and 3D software. The T-X endoskeleton was painted chrome black, in order to differentiate it from the silver sheen of the T-800 endoskeleton. The T-X was also fitted with blue running lights, rather than the original's red. John Rosengrant later stated that the individual parts of the T-X endoskeleton were hard coated, sanded and polished through machines, resulting in a mathematically perfect model, unlike the endoskeleton in The Terminator, which was sculpted by hand and lacked symmetry.
The T-X is designed to not only terminate humans but rogue Terminators reprogrammed by the Resistance, an "anti-terminator terminator" as stated by John Connor. It is a composite of the T-800 and T-1000, a solid endoskeleton covered with liquid metal "mimetic polyalloy", allowing it to take the shape of any humanoid it touches. Because it is only coated in this material, it is possible to remove it from the endoskeleton using immensely strong magnetic force, such as from a cyclic particle accelerator. Powering all the T-X's systems is an onboard plasma reactor.
Since only living tissue or mimetic polyalloy imitating human tissue can travel back in time, previous Terminators were limited to hand to hand combat and acquired weapons, or in the case of the T-1000, forming solid metal shapes and bladed weapons from their own bodies. The T-X, however, carries weapons internally, permitting it to take its futuristic arsenal back with it. Weapon discharges are fired from modified hands and forearms. During Terminator 3, its primary weapon in combat is a directed plasma energy weapon until it is badly damaged and replaced by the IAD ChemTech, a type of flamethrower. Other advanced onboard weaponry included (but possibly not limited to): P31 Caustic Shells (x 231); the HDE Predator (333b); the Finite Rapid Cluster Gun; .45 cal. Cascader; the Nano-Disruptor (.222 cal.) and the SUBauro Neutralizer (.444). It also has a circular saw for general cutting duty. Like other Terminators, it can readily use weapons designed for human use. The novelization also includes other capabilities; it has teeth that are harder than diamond that can cut through solid titanium, can break a human spine just by pinching with the thumb and forefinger, and its thighs can squeeze with a force greater than an industrial hydraulic press. However, the T-X still needs to acquire vehicles and other forms of transport needed to accomplish its missions.