Pilot is the rather unimaginative name for the pilot of the Leviathan space transport, Moya. There is an individual Pilot in each Leviathan. He comes from a planet where the dream of every member of his species is to travel the stars, steering a great Leviathan spaceship.
If you were to meet Captain Crais in a pub he would be the Head Doorman. It would only be a small pub, but there would be at least five doormen and all of them would be trained to kill.