Ellen Louise Ripley[4] was a warrant officer and third-in-command aboard the commercial towing vehicle USCSS Nostromo. She encountered a deadly alien species, Xenomorph XX121, an event that led to the death of the rest of her crew and the destruction of the ship. Her discovery of the Xenomorph would change the course of her life and plague her for the rest of her existence. After her discovery, she joined the Alliance of Nations during the War