T-1000 played Kyle Reese in "The Terminator", in the role with the explanation that Skynet managed to acquire Reese's DNA and use it for a new Terminator. Cameron ultimately dropped this idea after deciding the audience would find it too confusing: eventually casting came down to Robert Patrick, as a deliberate contrast to the original Terminator - Cameron stated "I wanted to find someone who would be a good contrast to Arnold. If the 800 series is a kind of human Panzer tank, then the 1000 series had to be a Porsche." For a more machine-like performance, Patrick had to learn
Terminator (character) each "model". The "Terminator" title has also been used as a generic name for other human-simulating characters in the "Terminator" universe, such as the liquid metal shapeshifting T-1000 antagonist in the sequel "" and a T-850 in the sequel "". The end credits of the first three "Terminator" films list Schwarzenegger's character as simply "The Terminator", while in "Terminator Genisys", he is credited as "Guardian". In "Terminator Salvation", a Terminator resembling Schwarzenegger created via facial CGI—used because Schwarzenegger's duties at the time as Governor of California prevented him from working on the film—over Roland Kickinger's on-set performance is credited as