James Cameron Schwarzenegger also returned in his role as The Terminator, but this time as a protector. Unlike Schwarzenegger's character—the T-800 Terminator which is made of a metal endoskeleton—the new villain of the sequel, called the T-1000, is a more advanced Terminator made of liquid metal, and with polymorphic abilities. The T-1000 would also be much less bulky than the T-800. For the role, Cameron cast Robert Patrick, a sharp contrast to Schwarzenegger. Cameron explained, "I wanted someone who was extremely fast and agile. If the T-800 is a human Panzer tank, then the T-1000 is a Porsche." Cameron had originally wanted
T-X fitting through narrow openings, morphing its arms into solid metal tools or bladed weapons, walking through prison bars and narrow openings, or flattening itself. Although the official novelization of "Terminator 2" expanded the origin of the T-1000 and reveals it had onboard nanotechnology (and programmable memory) that was capable of scanning the molecular structure of anything the T-1000 touched, the T-X has a built-in supply of more advanced nanobots in its fingers, which it can inject into other machines (even a less-advanced android), giving it remote control. An onboard plasma reactor powers all of the T-X's systems. Loken had to