The T-800, also known as the Terminator, is a cybernetic organism from the film 'Terminator 2: Judgment Day'. Designed by Skynet, it is programmed to protect John Connor, the future leader of the human resistance against machines. This model, portrayed by Arnold Schwarzenegger, showcases a human-like exterior with a metal endoskeleton beneath. Throughout the film, the T-800 evolves from a cold, calculating machine to a protector and father-like figure, showcasing themes of sacrifice and the potential for humanity in artificial beings.