Works with their own trivia pages:

* ''Trivia/{{Aliens}}''
* ''Trivia/{{Alien 3}}''
* ''Trivia/AlienResurrection''

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!!Trivia for the franchise in general:

* BasedOnADream: Not the film series' premise, but the creatures themselves. Their design is the work of Creator/HRGiger, who took them from his nightmares.
* FanNickname:
** Xenomorph - Used once, among many other words, to describe the aliens in the franchise, this word stuck as the standard term used by fans. Other names for the species used in spinoff media are 'Internecivus Raptus' (Murderous Thief) and 'Linguafoeda Acheronsis' (Foul-tongue from Hell, Acheron being also the name of the planet on which the creatures were first encountered in 'Alien').
** None of the life cycle stages (i.e. Facehugger, Chestburster, Drone) were ever officially named. They were given Fan Nicknames which simply stuck.
* FranchiseKiller: Not everyone was very happy about how ''3'' or ''Resurrection'' turned out, and [[IntercontinuityCrossover mashing it up]] with ''Franchise/{{Predator}}'' hasn't done much to restore faith in the series.
* TheGreatPoliticsMessUp: As everybody knows, Weyland-Yutani is a combination of motoring conglomerate British Leyland and generic Japanese. Ah, British Leyland, that pride of the nation, a household name for decades and trailblazer for the world, such an unstoppable industrial force would surely spread its MegaCorp tentacles across the galaxy for sci-fi centuries to come. Thing is, this film was released in 1979 and British Leyland went bankrupt in 197'''5'''. For Britons, the fall of a once proud company was the ultimate symbol of Britain's postwar decline - at least, if you're old enough to have heard of the company in the first place. For Americans, two words - General Motors. Oh, and Japan tanked in the '90s too. But the Asian half of the equation is fine. In 2009, the shattered remnants of British Leyland went bankrupt one last time - and were [[ChinaTakesOverTheWorld bought out by the Chinese]].
* ImageSource: This franchise provides the page image for (those for the other films are listed on their respective Trivia pages):
** BizarreAlienBiology
** RuleOfScary
* KeepCirculatingTheTapes: The "Aliens" Mod for ''VideoGame/{{Quake}}'' was killed by Fox lawyers (creating the term "Foxed" for that situation), but of course that didn't stop it from being available online for many years afterwards.
* TropeNamer: These movies named the following tropes:
** ChestBurster - This is the part of the alien's reproduction method, and main gateway to horror.
** FaceFullOfAlienWingWong - TropeCodifier, but not the [[VGCats direct trope namer]].
** FaceHugger
** GameOverMan - Not an example itself; [[JustForPun just for the terrible pun]].
** ItsTheOnlyWayToBeSure - Suggested in ''Aliens'', but the main characters don't get to pull it off.
** StayFrosty - Originated by Corporal Hicks.
** VasquezAlwaysDies - After the tough female character by that name who dies in the second movie.
* WhatCouldHaveBeen: There were brief talks of James Cameron's interest in writing a script for a possible ''Alien 5'' with Creator/RidleyScott interested in directing, but Fox chose to focus on ''AlienVsPredator'' instead.
* TheWikiRule: There's the Alien Anthology Wiki, which can be found [[http://alienanthology.wikia.com/wiki/Alien_Anthology_Wiki here]].

!!Trivia for the first film:

* AbilityOverAppearance: The script was written so that any character could be played by either a woman or man. The filmmakers originally wanted a guy for Ripley, but Creator/SigourneyWeaver owns the role.
* DeletedScene: From near the end of the film, as Ripley comes across Dallas while setting up the ship's destruction, going through the process of being turned into another egg and finishing the explanation of the alien's life cycle. Ridley Scott loved the idea, but found that the scene was too much of a speed bump in the middle of the climax.
* EnforcedMethodActing:
** The cast knew the general details of what they were shooting for the ChestBurster scene, but they didn't know they were going to get sprayed with real animal blood and entrails. Veronica Cartwright's shocked scream is entirely real.
** Cartwright ''really'' slapped Sigourney Weaver. That wasn't just a sound effect, and Weaver's recoil and look of shock is genuine. According to the actress in the DVD commentary, she was fed up with Sigourney, who at that point had acted only on the stage and so was not used to pretending to get hit, instinctively flinching away from the slap and so, after numerous failed takes, faked the first slap and then properly hit her when she flinched.
** Director Creator/RidleyScott placed a veiled cage with a German Shepherd in front of Jones the Cat, and unveiled it when he shouted "Action!!" Hence when The Alien rose up behind Brett like a phallic gargoyle, the menacing hissing of fear from the poor kitty cat was ''real.''
** In a lesser known example, Creator/RidleyScott made sure that Bolaji Badejo ([[PeopleInRubberSuits the man who played the Alien in most of the scenes]]) did not take tea or lunch breaks with the rest of the cast so their fear of the alien would be more genuine.
** Yaphet Kotto did a lot of improv acting. Scott played along with it, and advised him to antagonize Sigourney Weaver, so their conflict later in the film would be more believable. When Ripley yells at Parker to "SHUT UP!" after Dallas's death, Weaver already had to listen to Kotto talking over her dialogue dozens of times.
* ExecutiveMeddling: According to the audio commentary, Ash as a character did not exist in the original concept at all, and was added during production. This apparently annoyed one of the writers, thinking it an unnecessary and a distracting diversion from the main plot, though the other writer and Scott thought it a [[TropesAreNotBad good twist]].
* FanNickname: Space Jockey - the alien pilot aboard the derelict ship -- extended to the rest of his race, as well. Derived from a name used by the film crew; in the canon, it's never named. In ''Film/{{Prometheus}}'' they're called the "Engineers".
* HeyItsThatGuy: ''Alien'' features an AllStarCast including [[Film/{{Ghostbusters}} Dana Barrett]], [[Film/TopGun Viper]], [[Film/LiveAndLetDie Kananga]], [[Film/TheLordOfTheRings Bilbo Baggins]], TheElephantMan, [[TheRightStuff Betty Grissom]], and [[RepoMan Bud]]. Along with Bolaji Badejo in the xenomorph suit, these are ''the only people in the film''.
* OneBookAuthor: An acting variant. Bolaji Badejo, the guy in the Alien suit, apparently vanished into thin air after completing the 1979 film. Although considering he was found in a pub and only hired because he was massive and very thin, this is understandable.
* TheOtherMarty: Actor Jon Finch had been cast in the role of Kane, but had fallen very ill due to his diabetes and was replaced by John Hurt.
* TakeThat: One common story is that "Weyland" and "Yutani" were the names of two of Creator/RidleyScott's neighbors whom he didn't like. However, this isn't the case. Ron Cobb, the designers of the movie came up with the name "Weylan-Yutani":
--> ''...Weylan Yutani for instance is almost a joke, but not quite. I wanted to imply that poor old England is back on its feet and has united with the Japanese, who have taken over the building of spaceships the same way they have now with cars and supertankers. In coming up with a strange company name I thought of British Leyland and Toyota, but we couldn't use "Leyland-Toyota" in the film. Changing one letter gave me "Weylan," and "Yutani" was a Japanese neighbor of mine.''
* ThrowItIn: According to Website/{{IMDb}}, most of the dialogue was ad-libbed.
* WorkingTitle: The first film was known as "Star Beast" in its earliest stages. When the writer went through the script he saw characters constantly referring to the Alien, and then the title came out at him, noting that is both a noun and an adjective.
* WhatCouldHaveBeen:
** Creator/HarrisonFord turned down the role of Captain Dallas in ''Alien''.
** Creator/RidleyScott and some of the cast mention in the audio commentary that he had the idea that casual sex between any and all members of the group [[EveryoneIsBi regardless of sex]], and that, in hindsight, he would have liked to show a homosexual relationship. A scene related to this would have been a conversation between Ripley and Lambert, one clarifying that they had either had sex or been solicited for sex by every man on the ship except Ash, as a way of foreshadowing that he is, in fact, an android.
** The original script had a DownerEnding where the alien kills Ripley, then imitates her voice in a call to Earth, indicating it's headed there next. Scott was persuaded that the film was horrific enough without it.
* AFI Accolades:
** "100 Years. . .100 Thrills" - #6
** "100 Years. . .100 Heroes & Villains" - #8 Hero, Ellen Ripley, #14 Villain, The Alien
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