In the Alien series, Ellen Ripley (Sigourney Weaver) is a warrant officer aboard the spaceship Nostromo. When the crew wakes from stasis to find an unknown creature has infiltrated the ship, Ripley steps up to play the unlikely hero.

Pvt. Vasquez

In Aliens, Private Jeanette Vasquez (Jenette Goldstein) is a smartgun operator who’s sent by the Marine Corps to deal with a space colony’s Xenomorph infestation. She’s tough as nails and doesn’t take crap from anyone, a useful skill when you’re in the same squad as Private Hudson.