The mother of Amanda Ripley and a warrant officer on the Nostromo , she and the cat Jones are the sole survivors of the expedition .
Ellen Louise Ripley ( Sigourney Weaver ) is the primary protagonist of the main Alien series .
The mother of Amanda Ripley and a warrant officer on the Alien , Ellen Louise Ripley and the cat Jones are the sole survivors of the expedition .
Ellen Louise Ripley ( Sigourney Weaver ) is the primary protagonist of the main Alien series .