Elijah Baley is a fictional character in Isaac Asimov's Robot series. He is the main character of The Caves of Steel, The Naked Sun, The Robots of Dawn, and the short story "Mirror Image". He is talked about heavily in Robots and Empire, which is set roughly 200 years after his death.
He is a plainclothesman, a homicide detective on the New York City police force. He is a...