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 (character) "T-RIP" and later "T-800". At different times, the Terminator character is given more specific designations such as "variant", "model" and "series" numbers, in efforts to distinguish Schwarzenegger's character from other mass-produced Terminators. Later films call the newer terminators by their series numbers (T-1000, T-X, etc.). The only consistent name for Schwarzenegger's Terminator character has been "The Terminator". Kyle Reese in "The Terminator" and Schwarzenegger's character in "Terminator 2" refer to it as a "Cyberdyne Systems Model 101". In "Terminator 3", the Terminator refers to itself as a "T-101", which could be an abbreviation of its model number. In "Terminator Salvation",