The Cyberdyne Systems Series 800 Terminator, also known as T-800 Terminator, Model T-800, or simply T-800, is a type of Terminator mass-produced by Skynet. The T-800 Terminator was Skynet's first cybernetic organism, with living tissue over a hyperalloy endoskeleton. This made it Skynet's first successful Infiltrator unit, capable of infiltrating the Resistance.The T-800 was the first in a line of Series 8xx Terminators in various timelines, including the T-850 Terminators of Rise of the Machines timeline and the T-888 Terminators of The Sarah Connor Chronicles timeline.