The Terminator series is a science fiction franchise consisting so-far of series of four films concerning battles between Skynet's artificially intelligent machine network, and John Connor's Resistance forces and the rest of the human race. In each film, Arnold portrays a different model Terminator.
Terminator Salvation takes place in 2018, 14 years after the events of T3, and follows an adult John Connors as he attempts to bring down Skynet. Arnold makes a cameo in the film, albeit in the form of a computer-generated estimate of his image circa 1984. He portrays a T-800 series Terminator whom John Connors and Marcus Wright battle in Skynet's headquaters. During principal photography, this T-800 was played by Roland Kickinger, whose body remains in the film with Arnold's CGI head placed atop it.