Trent from Harlan Ellison's "The Outer Limits" episode "Demon with a Glass Hand"

"Like the Eternal Man of Babylonian legend, like Gilgamesh, one thousand plus two hundred years stretches before Trent. Without love. Without friendship. Alone; neither man nor machine, Waiting. Waiting for the day he will be called to free the humans who gave him mobility. Movement, but not life."