Alien(1979)

Dallas, Kane, and Lambert descend to the barren surface and discover a massive, biomechanical derelict spacecraft. Inside, they find the fossilized remains of a giant "Space Jockey" whose chest has exploded from the inside. Kane explores a lower chamber filled with thousands of leathery eggs. When he approaches one, it hatches, and a spider-like creature—a —leaps out, melting through his helmet and attaching itself to his face.

is snatched while searching for the ship's cat, Jonesy. Alien(1979)

Back on the Nostromo , Ripley attempts to enforce a 24-hour quarantine to prevent the creature from coming aboard. However, Ash violates protocol and opens the airlock, allowing the team and the specimen inside. Dallas, Kane, and Lambert descend to the barren

As the crew attempts to hunt the creature, they realize it is growing at an impossible rate, transforming into an eight-foot-tall apex predator with concentrated acid for blood. One by one, the crew members are picked off: When he approaches one, it hatches, and a

Deep in space, the commercial towing vessel Nostromo is carrying 20 million tons of mineral ore back to Earth. The seven-member crew—Captain Dallas, XO Kane, Warrant Officer Ripley, Navigator Lambert, Science Officer Ash, and Engineers Parker and Brett—are awakened early from cryosleep by "Mother," the ship's AI.

They haven't reached home; instead, Mother has intercepted a mysterious transmission from a nearby moon, Acheron (LV-426). Bound by company protocol, they are forced to investigate.