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 concept) of acquiring knowledge and performing problem solving through reason based on whatever it learns. Terminators, being machines, do not have human emotions. According to Reese, Terminators "can't be bargained with, can't be reasoned with and [don't] feel pity or remorse or fear." Terminators also do not value life, and pragmatically kill in keeping with their programming, i.e. to fulfill their mission. In "Terminator 2", when John Connor realizes that the T-800 was about to kill a man they encountered, he responds "of course, I'm a terminator." Conversely, when discussing a variation on the "Blade Runner" 'tortoise test' in "Terminator: The