Alien

Alien is a science-fiction horror and action media franchise centered on the film series which depicts warrant officer Ellen Ripley (Sigourney Weaver) and her battles with an extraterrestrial lifeform, commonly referred to as “the Alien” or Xenomorph.

https://en.wikipedia.org/wiki/Alien_(franchise)#:~:text=Alien%20is%20a%20science%2Dfiction,%22the%20Alien%22%20or%20Xenomorph.