Arthur Dallas

Dallas Koblenz Arthur was a Human male who was the Captain of the Nostromo. Unlike the vessel's other crew members, Dallas was typically referred to by his first name. He was in command for the vessel's fateful voyage in 2369 when it encountered a Xenomorph on LV-426, an incident that eventually led to the destruction of the ship and the loss of all but one of its crew.

Dallas was taken by the Alien while attempting to flush the creature from the ship's ventilation shafts and into its main airlock so that it could be expelled into space; he is later found by Ripley, cocooned in the Nostromo's hold.