Like the ever-evolving apex predator at its center, the Alien series owes its survival to its adaptability. The results could be almost aggressively fan-unfriendly: Alien 3 summarily killed off two of the three survivors from the massively successful Aliens, as well as the series’ heroine, Sigourney Weaver’s Ripley; Alien Resurrection brought her back, 200 years later, as a clone whose …
