The Aliens also have a ride at Disney theme parks called Alien Swirling Saucers. Aliens try to avoid capture from MNU agents whilst searching for alien canisters. Jeunet asked ADI to lean towards making the human/Alien hybrid creature more human than Alien. Two romances develop between human and alien characters. They finalize their plan to explore the galaxy in search of alien life. Nomad gets trapped and decides to continue into the alien structure. Terraforming is a natural outgrowth of colonizing an alien world. Wars between separate alien civilizations are featured. He went for a scary, hard, warrior-looking alien, which is much more of a challenge. The party is attacked by a pack of quadruped alien beasts. The appearance of a live alien and flying saucer was in flux. These parallels include the physical nature of the alien. Spaihts was tasked with exploring unresolved mysteries from "Alien", such as the Space Jockey. Two Predators die in the ensuing battle with an Alien. Such introductions may be termed alien or invasive species.