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
Terminator 2: Judgment Day new Terminator, designated as T-1000, back in time to kill John. The T-1000 is an advanced prototype made out of mimetic poly-alloy (referred to as "liquid metal") that gives it the ability to take on the shape and appearance of almost anything it touches, and to transform its arms into blades and other shapes at will. The T-1000 arrives under a freeway, kills a policeman and assumes his identity. Meanwhile, the future John Connor has sent back a reprogrammed T-800 (Model 101) Terminator to protect his young self. The Terminator and the T-1000 converge on John in a shopping mall,