This is a page listing characters in the ''Franchise/{{Alien}}'' series.

Works with their own pages:

* ''Characters/{{Aliens}}''
* ''Characters/{{Alien 3}}''
* ''Characters/AlienResurrection''
* ''Characters/{{Prometheus}}''
* ''Characters/AliensColonialMarines''
* ''Characters/AlienIsolation''

'''Warning: here be heavy spoilerage.'''


!![[Franchise/{{Alien}} The franchise in general]]:

[[folder:Ellen Ripley]]

!!Ellen L. Ripley
->'''Played By''': Creator/SigourneyWeaver

->"''You are my lucky star...''"

The primary protagonist and hero--in fact, is ranked #8 on AFI's "Heroes" List--Ripley is probably the most famous character in the franchise aside from the titular xenomorph. Probably the most level-headed member of the crew, demonstrating an impressive amount of bravery and [[TookALevelInBadass taking a few levels in badass]] when dealing with the xenomorph. De-facto leader of the crew on the basis of being the most proactive member.

The sole human survivor of the ''Nostromo'' Incident and the only constant character in the franchise apart from the xenomorphs.
Sole survivor of the ''Nostromo'' incident, Ripley is awakened from {{h|umanPopsicle}}ypersleep 57 years later. She gets suspended by the Weyland-Yutani company for "questionable judgment" regarding the ship's self-destruction, finds out her daughter died a while ago (well, in the Director's Cut...) and that LV-426, the planet where they encountered the xenomorphs, is now colonized.

Once the colony predictably loses contact with Earth, Ripley accompanies the BadassCrew of {{Space Marine}}s as a civilian advisor, and finds herself as ''de facto'' leader alongside Corporal Hicks due to unforeseen consequences. In the resulting struggle with the xenomorphs, Ripley gains more levels in badass and becomes one of the most awesome {{Action Girl}}s in cinema.

'''For tropes relating to the Ripley 8 clone, [[Characters/AlienResurrection see the character page]] for ''Film/AlienResurrection''.'''
* ActionGirl: One of the most important and revolutionary in all of cinema.
* ActionMom: Ripley had a biological daughter, Amanda, who died during the 57-year timeskip between the 1st movie and 2nd, and who is also the protagonist of ''VideoGame/AlienIsolation''. Ripley later [[PromotedToParent takes Newt in]] in ''Aliens''... but it doesn't last.
* ActionSurvivor: After her tangle with a Drone, Ripley TookALevelInBadass in the sequels.
* AlwaysSaveTheGirl: Soldiered into the heart of a Xenomorph hive in ''Aliens'' to rescue Newt while it was ''minutes'' away from going nuclear.
* BadassNormal: The original Ripley was only a human but managed to take down a Queen.
* BadassAndChildDuo: With Newt in ''Aliens''.
* BaldWomen: Due to Fury-161 having "a big problem with lice".
* BigNo: Lets one out during especially traumatic events.
* CassandraTruth: The prison superintendent doesn't respond favorably to her warnings of an "eight foot creature with acid for blood".
* CombatPragmatist: Ripley learns to make use of whatever weapons she has at hand.
* DeadpanSnarker: Especially in ''Aliens'' and ''3''.
* DeathSeeker: in ''Alien 3'', upon learning she's the host of the next Queen.
* DuctTapeForEverything
* GenreSavvy: Ripley picks up on the MegaCorp's intentions for the Xenomorphs rather quickly and actually takes charge of the military operation in ''Aliens'' as well as organizing the prison in ''3'' to defeat the creatures.
* {{Guile Hero}}ine: Ripley fights using her brain... and whatever weapons she can get her hands on.
* FantasticRacism: She's doesn't trust Bishop an inch once she finds out he's an android. She gets over it later.
* FinalGirl: She's the sole survivor of the ''Nostromo'' in ''Alien'', as well as of the military expedition in ''Aliens''.
* HateAtFirstSight: She instantly despises Bishop due to him being an android due to previous bad experience with artificial persons.
* TheHero: Ripley is sarcastic and bitter, but she's a good person.
* HeroicSacrifice: Throws herself into the incinerator to keep the company from getting their hands on a Queen.
* HonorBeforeReason: Hive of monsters? Snarling Alien Queen? Imminent thermonuclear holocaust? Still not gonna stop Ripley from saving Newt.
* HotBlooded: Gets to this point during ''Aliens''.
* ICannotSelfTerminate: Seems to believe this for a while and asks Dillon to help out.
* IGaveMyWord: [[SugarWiki/HeartwarmingMoments "...and hope to die."]]
* JerkWithAHeartOfGold: She can come across as stiff and unlikable in the first movie due to her adherence to the rules, and she can be rather cynical in the sequels. However, there's never any doubt that she's a very heroic and selfless person.
* KindheartedCatLover: She liked the ''Nostromo'''s cat.
* KnightInSourArmour: (Wearily) ''"You have been in my life for so long, I don't remember anything else."''
* TheLadette: Not as butch as most examples, but it's there.
* MamaBear: Provides the page image.
* MustHaveCaffeine: Most prominently in ''Film/{{Aliens}}'', justified as she has ''not'' slept for one ''second'' in the 36 hours since landing back on LV-426.
* NotSoAboveItAll: She's pretty pragmatic, but not so much that she can just abandon her cat when the ship is about to self-destruct.
* ObstructiveBureaucrat: Subverted - Ripley was doing the right thing trying to institute quarantine.
* OnlySaneMan: In comparison to most of her comrades, she's this.
* ScrewTheMoneyIHaveRules: When Burke tries to tell Ripley how much they can profit from bringing in a xenomorph.
* TheSpock
* SurvivalMantra
* TankTopTomboy: She wears a tank top here and there, and she's certainly a pragmatist and a survivor.
* TookALevelInBadass: Or, more accurately, '''levels'''.
* TraumaCongaLine: Her crewmates are killed by a ravenous alien creature and a psychotic android and she learns the company she works for will stop at ''nothing'' to try to acquire said alien creatures for use as bioweapons; she winds up returning to the planet where said alien creature was discovered; her love interest and adopted daughter are killed during cryosleep; she's nearly gang-raped by a bunch of psychopaths; and she learns she's hosting a Queen embryo. Yeah... Ripley's had it rough.
* YouAreInCommandNow: Ripley takes control of the military expedition in ''Aliens'' and the prison in ''3'' solely because she has prior experience fighting the Xenomorphs.

[[folder:The Aliens]]
! The Aliens / Xenomorphs/Xenomorph [=XX121=]
[[caption-width-right:300:An Alien Queen and a Drone.]]
[[caption-width-right:244:An Alien Drone close-up.]]

The primary antagonists of the series--the original one is #14 on AFI's "Villains" List--these parasitic extraterrestrials are predatory creatures with no higher goals than the propagation of their species and the destruction of life that could pose a threat. Aliens are vaguely bipedal in form, though they often adopt a more hunched, quadrupedal stance when walking or sprinting. In addition, they integrate the genetic material of their hosts into themselves and as such their adult form varies depending on their host. They have a skeletal, biomechanical appearance and are usually colored in muted shades of black, blue or bronze in the films; the toyline-exclusive Xenomorphs sported various colours. The films show the following Xenomorphs:
* ''Alien'': Xenomorph Drone (human-born)
* ''Aliens'': Xenomorph Drone/Warrior, Xenomorph Praetorian, Queen Xenomorph (human-born)
* ''Alien 3'': Xenomorph Drone (human-born), Runner Xenomorph (dog/ox-born)
* ''Alien Resurrection'': Xenomorph Drone, Xenomorph Queen (human-born), Newborn (Ripley-born)
And the Expanded Universe includes the following Xenomorphs:
* Kenner toyline: Snake Xenomorph, Night Cougar Xenomorph, Rhino Xenomorph, Bull Xenomorph, Aqua Xenomorph, Panther Xenomorph, Flying Xenomorph Queen, Xenomorph King
* Konami arcade game: Razor Claws Xenomorph, Flying Xenomorph
* Dark-Horse comics: Marine Xenomorph, King Xenomorph, White Xenomorph
* ''Film/AliensVSPredatorRequiem'': Predalien
* AlwaysChaoticEvil: They are extraterrestrial monsters that kill anything in sight. Later movies explain that this is because they are a bioweapon gone out of control.
** Subverted in the "evil" aspect of the trope. They are extremely vicious, but that's mostly due out of predatory instinct rather than actual malicious intent. They're more akin to wild animals than the typical villainous aliens of science fiction.
* AttackAnimal: The Xenomorphs began as a bioweapon created by the Engineers before they ran amuck.
* AxCrazy: The Newborn comes across as a sadistic freak, namely in his butchering of the Queen and morbid fascination at human blood literally plastered on his hand.
* BatmanCanBreatheInSpace: They appear to be able to function just fine in a vacuum, and it is not clear if they even need to breath.
* BewareMyStingerTail: Xenomorphs possess long, segmented tails that resemble spinal columns, tipped by a blade-like stinger that is used to impale prey. Some adaptations, like the novelizations of the movies, also show that their stingers can inject a neurotoxin that paralyzes their victim, allowing them to be easily carried back to the hive for impregnation.
* BigBad: Goes hand in hand with VillainBasedFranchise.
* BlueAndOrangeMorality: Their sense of morality is basically like that of a colony of ants or bees. In other words, protect the queen and expand the colony.
* CainAndAbel: Both the xenomorphs and the humans [[spoiler:were created by the Engineers, thus making both species siblings in a weird kind of way. However, this trope is deliberately enforced as the engineers created the xenomorphs in order to wipe out the humans for reasons unknown.]]
* ChestBurster: TropeNamer, as their larval stage incubates within a host's stomach before violently ejecting itself through the sternum.
* ConservationOfNinjutsu: Every time the protagonists are confronted with a ''single'' Xenomorph drone (in the original and third movies), the beast prove basically unstoppable and murders them all one after the others. When confronted with an entire army of them (like in ''Aliens'' and ''Alien IV''), on the other hand, they are usually able to take down several of them, forcing the Xenomorphs to rely on ZergRush. [[JustifiedTrope Then again, there are justification for this]]: the original movies and ''Alien 3'' involve fighting the beast in a closed space where it can easily hide itself or ambush people, who are then lacking any modern weapon. Not to mention they are in a ship in the first movie, meaning any bleeding from the alien could doom everybody by damaging the ship. In the two other movies, the protagonists are using actual weapons, are more adapted to fight and are more numerous themselves.
* CreepyLongFingers: Depending on the specific design of whatever movie they're in their fingers can be terrifyingly long, emphasizing their non-humanness.
* TheDreaded: They're feared (and with good reason) by everyone who has to face them, and Ripley suffers from {{Catapult Nightmare}}s as a result of the encounter on the ''Nostromo'' and the shuttle.
* EliteMooks: The Drones with ridged cowls, which first appeared in ''Aliens'', are aptly referred to as Warriors in the ExpandedUniverse.
* EvilIsBigger: Once the Chest Burster grows, they get huge - the shortest credited actor to play the Alien was 6' 2" (1.88 m).
* EvilIsNotAToy: It's scary how many idiots keep believing they can tame the Aliens and use them as weapons to make profit or other stuff. Needless too say, it almost always have disastrous results, and they usually are the first to pay for it. Especially egregious as [[spoiler:[[TurnedAgainstTheirMasters they have escaped from their creators control and killed or harvested them just like everyone else]].]]
* EvilVersusEvil: Whenever they go against the Predators, though the Predators are usually more heroic than the Xenomorphs, since they only hunt prey equal to them.
* EyelessFace: Their iconic, elongated skull lacks eyes.
* FaceFullOfAlienWingWong: TropeCodifier, being how the Facehuggers implant embryos into hosts.
* FangsAreEvil: Xenomorphs possess teeth that are roughly human in shape, but ''much'' more pointy.
* GodSaveUsFromTheQueen: Ooh boy... the Queen is the largest and most powerful caste.
* {{Hermaphrodite}}: H.R Giger designed them so that they would be neither male nor female but rather a horrific blend of both sexes. Yes, this even includes the Queen herself.
** The [[FanNickname Newborn]] was originally going to have visible male and female reproductive organs. However, they were later digitally removed after the director decided they were "too much". Images of the uncensored model can still be found online, for anyone curious to look.
* HiveCasteSystem: The Queen Alien is LargeAndInCharge, with the human-born Drone aliens doing the hunting and hive-building. The Ridged Drones, often referred to as Warriors, are the EliteMooks of the hive, and in the EU a [[BadassPrincess Praetorian]] caste pops up as well. Unique specimens such as the dog/ox-born [[RunningOnAllFours Runner]] in ''3'' and the Predalien in ''[[Film/AlienVsPredator Requiem]]'' (stated by WordOfGod to have been a young Queen to boot) fill in as needed.
* HiveMind: A bit differently than others. It's made apparent that they can sense one another, like hearing the screams of their Queen, and have some degree of intelligence and intuition, but they're mostly instinctual creatures. Ripley, who's part alien in ''Resurrection'', can sense two of them killing another to escape from their containment.
* TheHypnotoad: Early Dark Horse comics implied that the HiveMind had some kind of subliminal telepathic lure that encouraged people to rationalize getting closer to Xenomorphs, essentially handing them the IdiotBall.
* ItCanThink: Implied to be smarter than the mindless monsters everyone assumes they are.
-->'''Ripley:''' (''Medical is plunged into darkness'') They cut the power...\\
'''Hudson:''' What do you mean ''they'' cut the power? How can they cut the power, man? They're animals!
* LargeAndInCharge:
** The Queen is TyrannosaurusRex-sized, and [[LightningBruiser it's not slow either]].
** The Predalien in ''Requiem'' is also the largest member of the hive that it controls, but combines this with AsskickingEqualsAuthority due to taking that role equally by virtue of being the most agressive and deadliest Xenomorph around.
* LegoGenetics: They incorporate the genetic material of their hosts into themselves. As such, the human-born drones are largely bipedal, but the dog/ox-born Runner was quadrupedal and lacked dorsal tubes, and the Predator-born Predalien had mandibles and fleshy dreadlocks.
** The toylines take this UpToEleven; the Xenomorphs in the toyline can come from anything; bulls, cougars, wild boar, rhinoceros, snakes, the list goes on.
* MamaBear: The Queen, nasty as she is, is very much like a real mother. She [[UnstoppableRage did not react well]] to the sight of her young getting killed.
* NonMaliciousMonster: They are like animals, they kill and face-rape because it's how they survive and reproduce. Most especially in ''Aliens'', where they are hunting for food and hosts, and trying to protect their nest and eggs.
** Averted to hell and back by the Drone in the first movie, which likes to curiously toy with the fears of its prey, like a rapist in the dark.
* NothingIsScarier: A large part of what made them so frightening was because of how ''subtle'' they were, especially in the mechanical/industrial backgrounds the movie took place in. Their manipulation of the environment allowed them to blend in with the dark corridors, making for ever JumpScare a moment of ParanoiaFuel for both the characters and the audience.
* NotSoDifferent: "Get away from her, you bitch." Replace "her" with "them" and you'll get a pretty good idea of what the Queen was probably thinking when Ripley burned her eggs to save Newt.
** Though to be fair, Ripley gave her a 'warning shot'. The Queen tried to have it both ways, and when one of the eggs opened, Ripley decided all bets were off. Though that's on the basis the Queen could/did command the egg to open: if it just did so because it sensed movement, the Queen was just SOL.
* PrimalStance: The Runner alien - a Drone born from a dog - is quadrupedal and lacks dorsal spines. Other Xenomorphs will [[RunningOnAllFours run on all fours]] as needed.
* SpikesOfVillainy: Their tails, claws, dorsal tubes, and the headdresses of the Queens and Praetorians.
* ToServeMan: The Xenomorphs feed off the deceased bodies of their hosts, and whatever else they catch.
* TransformationAtTheSpeedOfPlot: The gestation period of xenomorph correlates to the precise moment when it will be most dramatic or convenient for an alien to pop out of someone's chest. Hatching can occur almost immediately after the facehugger falls off, or it can take nearly a day. How important said person is to the plot usually determines if it's the former or the latter. Xenomorphs also mature as fast as is convenient.
* YouAreNumberSix: According to the 2014 "Out of Shadows" trilogy of novels, with 20th Century Fox oversaw and has recognized as canon, "Xenomorph [=XX121=]" is [=WY=]'s the official designation for the species.
* VillainBasedFranchise: They're the titular "alien".
* ZergRush: How the aliens attempt to attack the Marines' fortification in the second film. Thanks to the automated sentry guns, it fails.

!![[Film/{{Alien}} The first film]]:

[[folder:Nostromo Crew]]
!!The Nostromo Crew
[[caption-width-right:350: The crew of the Nostromo. [[note]]Brett, Ash, Kane, Lambert, Dallas, Ripley, Jones the Cat and Parker.[[/note]]]]
->'''Played By''': Veronica Cartwright, Ian Holm, Creator/JohnHurt, Yaphet Kotto, Creator/HarryDeanStanton, Tom Skerrit & SigourneyWeaver

The Nostromo is a commercial towing vessel owned by the enormous Weyland-Yutani Corporation. It hauls a massive ore refinery along with 20 millions tons of raw ore. It also has a self destruct sequence and an escape shuttle, The Narcissus. It's manned by seven crew members... and one cat.

* Captain Dallas
* Warrant Officer Ripley
* Navigator Lambert
* Engineering Technician Brett
* Executive Officer Kane
* Science Officer Ash
* Chief Engineer Parker

!!Dallas Koblenz Arthur
[[caption-width-right:250:''"Standard procedure is to do what the hell they tell you to do!"'']]
->'''Played By:''' Tom Skerritt

The laid-back captain of the Nostromo; he has sole access to Mother, the on-board computer. Despite his nonchalant and casual-seeming attitude, his leadership and decision-making skills become increasingly evident.
* {{Badass}}: He went into the vents by himself, armed with a flamethrower.
** BadassBeard: A pretty thick one.
* TheCaptain: Of the Nostromo.
* CharacterDeath: [[spoiler:Dallas is the third victim of the Alien.]]
* DecoyProtagonist: Tom Skerritt had the first name on the cast list (though he does lead the Jockey investigation), but Ripley's the main protagonist.
* AFatherToHisMen: His absolute refusal to wait the necessary 24-hours before letting Kane in smacks of this.
* IdiotBall: The guy opts to go crawling about in dark, terrifying shafts in order to search for a creature they know absolutely nothing about and which killed one of his crew being born. And he does this ''by himself''. He mainly does it because Ripley volunteered and he insisted to be the bait for the airlock trap. Dallas may also be trying to atone for his failure to stop the alien to this point, especially when he brought it into the ship rather than following proper quarantine procedures. Sure he knows its dangerous to go after the creature, but he is TheCaptain.
* JustFollowingOrders: As he explains to Ripley.
* LaserGuidedKarma: Not that he deserves what happens, but it is partly his fault.
* NiceJobBreakingItHero: Letting the alien into the Nostromo, although he was trying to save Kane.
* TeamDad: Of the Nostromo.
* WrongGenreSavvy: In most other sci-fi films, Dallas' would likely be vindicated in most of his decisions: his desire to leave the planet, the way he ignores standard procedure (Ripley comes across as a cold-hearted ObstructiveBureaucrat initially), his heroic volunteering to go into the vents...but he inhabits a much more cynical universe where ruthlessness is often rewarded. Dallas' attempts at heroism ultimately help nobody.

!!Joan Marie Lambert
[[caption-width-right:250:''"I say that we abandon this ship! We take the shuttle and just get the hell out of here!"'']]
->'''Played By:''' Veronica Cartwright

The navigator of the Nostromo. Disinclined to taking risks beyond the confines of her console, she resents being chosen as one of the team to explore the derelict, and later angry with Ripley for her decision to leave Kane, Dallas and herself outside of the ship when the facehugger was attached to Kane.
* TheChick
* CruelAndUnusualDeath: The last time we see Lambert alive, she's screaming in horror as the Alien's tail slowly works its way between her legs; the scene then cuts to Ripley's point of view as she's listening to all of this transpire on her radio. Suddenly, [[NothingIsScarier Lambert's screams are cut short and everything goes silent.]] We probably dodged a bullet by not seeing what happened to her.
** The book, "Alien: Out of the Shadows" reveals what happened to her: [[spoiler: the alien ripped a hole through her face and hung her from the ceiling]].
* DamselInDistress
* DeadpanSnarker
* DeerInTheHeadlights: Freezes up when she sees the alien near the end of the movie. Unfortunate, as Parker had been trying to hold it off...
* HystericalWoman
* LetsGetOutOfHere: She screams at Dallas to get out of the air shafts over the radio. It doesn't help, since it causes Dallas to panic.
* TheLoad: As mentioned above, she's pretty useless after the dinner scene, save for the fight against Ash, where she finishes him off with the cattle prod.
* NeutralFemale: During the fight between the alien and Parker.
** But, to be fair, she managed to kill Ash when he had Parker pinned and Ripley incapacitated, so she wasn't completely useless after all.
* ScreamingWoman
* SoundOnlyDeath: And possibly the most disturbing in the movie.

!!Thomas Kane
[[caption-width-right:250:''"I do remember some horrible dream...about smothering..."'']]
->'''Played By:''' Creator/JohnHurt

The Executive Officer aboard the Nostromo. During the investigation of the derelict space ship, he incautiously moves to get a closer look at one of the unusual 'pod' forms encountered and from this an unknown life-form (later known as an Ovomorph, or face-hugger) attaches itself to his face and (unknown to him and to the crew) impregnates him with an alien creature.
* BurialInSpace
* ButtMonkey: Though he did volunteer to go down into the egg chamber.
* CruelAndUnusualDeath: He is the first to die from a chest burster in the alien series.
* DramaticSpaceDrifting
* MrSeahorse: Though not ''literally'' his child, Kane is still the first man in motion picture history to "give birth" '''onscreen.'''
* NumberTwo: To Dallas, apparently. He would be in charge when Dallas is off the ship, if he hadn't gone along.
* NameOfCain: Yeah, you should have figured this the instant [[spoiler: Ash calls the adult xenomorph "Kane's son" after it takes Brett]]
* NiceJobBreakingItHero: Fiddling with the eggs was a very bad idea.
* TheSmartGuy: He was indicated to be this on his record screen on ''Aliens'' (it indicated he had multiple flight and science majors, but had to drop from one school due to medical treatment abuse). However, he doesn't get to use it to full effect.
* SurprisinglySuddenDeath

[[caption-width-right:250:''"I can't lie to you about your chances, but...[[YouHaveNoChanceToSurvive you have my sympathies]]."'']]
->'''Played By:''' Ian Holm

The Nostromo's inscrutable science officer. He administers medical treatment, conducts biological research and is responsible for investigating any alien life forms the crew may encounter. It is at Ash's insistence that the crew investigates the mysterious signal emanating from LV-426.
* AdmiringTheAbomination: A textbook case.
* AIIsACrapshoot: Unless the Company programmed him to be so utterly sadistic towards his human comrades, he's got some serious malfunctions.
* ArtificialHuman: Notably the rest of the crew is surprised that Ash in particular is a robot, but not surprised at the existence of human-appearing robots.
* BigBadEnsemble: At first he may simply seem like an UnwittingInstigatorofDoom with his actions on LV-426, but it later becomes clear he was manipulating from the beginning to ensure the alien would be born and the crew would be unable to fight it until it was too late. In this case, the Company serves as the BiggerBad, planning to use the alien for their own purposes. He shares the role of BigBad with the Alien, though considering they're both trying to wipe out the crew, they may qualify as a BigBadDuumvirate.
* EvilBrit
* {{Expy}}: As ''Alien'' was always inspired by ''Film/TwoThousandOneASpaceOdyssey'', it stands to reason that Ash is this film's HAL 9000, being a seemingly benevolent machine secretly manipulating events to ensure the death of the crew. The difference between them is that HAL had just [[AIIsACrapshoot gone crazy]], whereas Ash is more or less following orders.
* FaceHeelTurn: It sort of comes across this way, but he was [[TheMole never really on their side to begin with]].
* FauxAffablyEvil: Just look at him gleefully waving at his friends as they march to their doom.
* GoOutWithASmile: Gives one last [[CheshireCatGrin winning smile]] before Ripley yanks out his plug, freezing his expression in place. Then Parker [[KillItWithFire burns the grin off with a flamethrower]].
* ImpaledWithExtremePrejudice: By [[TheLoad Lambert]], no less!
* [[BarbieDollAnatomy Ken Doll Anatomy]]: Ridley Scott says in the DVDCommentary that his assault on Ripley was his attempt at emulating sex, as he lacked the equipment needed.
* LogicBomb: Once found out, Ash drops the facade of being human and starts behaving erratically. Some have theorized that the conflicting orders of "[[ThreeLawsCompliant Do not kill]]" and "Bring back lifeform, all other priorities rescinded" proves too much for him.
* LosingYourHead: His crewmates knock his head off, but it's still capable of spouting exposition if you hotwire it.
* MadDoctor: He seems more interested in his specimen than in general safety.
-->'''Ripley:''' You're ''still'' collating?!
* MarionetteMotion: After sustaining damage, he starts spinning like a top and making insane whirring noises.
* TheMole: Ash was placed on the ship specificially to ensure Special Order 937 was carried out.
* MrExposition
* MyDeathIsJustTheBeginning: Losing his head doesn't stop Ash from filling his role as MrExposition, nor does his permanent deactivation do much to hamper his mission of bringing back the alien alive.
* NotQuiteDead: Parker breathes easy once the android is decapitated.. only for it to rear back up and come at him with karate-hands.
* PercussiveMaintenance: "Ash, can you hear me?" ''(SMACK!!)''
* ReliableTraitor
* RememberTheNewGuy: Dallas told Ripley he went out with another Science Officer in five of his previous trips. Said officer was replaced with Ash two days before the ''Nostromo'' took off from Thedus (the planet the ship received the ore refinery from) on their trip to Earth.
* RoboticReveal: A milky substance from his forehead after Ripley throttles him.
* TheSmartGuy: Well duh, he is the scientist.
* TheSocialDarwinist: There's a definite element of this to his admiration of the Alien.
-->''"I admire its purity. A survivor. Unclouded by conscience, remorse, or delusions of morality."''
* [[YouHaveNoIdeaWhoYoureDealingWith You Have No Idea What You're Dealing With]]: Or so he says to the crew.
-->''"You still don't understand what you're dealing with, do you? Perfect organism. Its structural perfection is matched only by its hostility."''

!!Dennis Monroe Parker
[[caption-width-right:250:''"I'm not for drawing straws. I'm up for killing that god-damned thing right now."'']]
->'''Played By:''' Yaphet Kotto

The chief engineer aboard the ship, with Brett as his assistant. Assertive and acerbic, he is a dauntless complainer and, abetted by his sidekick Brett, demands more money for investigating the alien transmission. Occasionally at odds with Ripley, his respect for her resourcefulness and plans to combat the growing crisis prevails.
* {{Badass}}: Besides Ripley, he's likely the most capable crew member. Parker is smart, strong and brave. [[spoiler:He helps to defeat Ash and even attacks the Alien with his bare hands.]]
* TheBigGuy: Of the crew. He's technically the GeniusBruiser since he's the Chief Engineer; he makes flamethrowers for himself and Dallas.
* BlackBestFriend: To Brett.
* BlackDudeDiesFirst: {{Averted|Trope}}. [[spoiler:He is the second-to-last to die.]]
* DeadpanSnarker: He takes the lead in snark.
-->''"We ain't outta here in ten minutes, we won't need no rocket to fly through space."''
* HeroicSacrifice: [[spoiler:Despite likely knowing that he couldn't physically match the Alien, he tries to save Lambert by attacking it. Unfortunately, it's a SenselessSacrifice due to Lambert's fear.]]
* JerkWithAHeartOfGold: Parker is loud-mouthed, greedy and sarcastic but he's a good man at heart. [[spoiler:Notably he's devastated by Brett's death and tries his utmost to save Lambert.]]
* OnlyInItForTheMoney: Much like Brett. He doesn't even entertain the possibility of investigating the distress signal without a discussion of a possible reward.
-->''"I hate to bring this up but, uh, this a commercial ship, not a rescue ship...and it's not in my contract to do this kind of duty. Now what about the money? If you wanna give me some money to do it, I'll be happy to, uh, t-to, you know, oblige."''
* OnlySaneMan: He frequently voices the rational approach to a situation. Parker and Ripley ought to get along better.
* RoaringRampageOfRevenge: [[spoiler:Following Brett's death, Parker quickly becomes the most passionate voice calling for the death of the Alien.]]
-->''"I'm not drawing any straws. I'm for killing that goddamn thing right now!"''
* ThoseTwoGuys: With Brett, his employee and friend. They're always seen together [[spoiler:until Brett's death.]]
* TokenMinority: Parker is the only non-white crew member.

!!Samuel Elias Brett
[[caption-width-right:250:''"[[{{Catchphrase}} Right.]]"'']]
->'''Played By:''' Creator/HarryDeanStanton

-->"''You see, Mr. Parker and I feel that the bonus situation has never been on a-an equitable level.''"

An engineering technician on board the Nostromo and a good friend of his engineering chief, Parker. As a 'regular working Joe', he persistently angles for the increased pay and bonus awards he feels are due.
* ButtMonkey: He's the lowest on the totem pole, as evidenced by the crew's dismissive treatment of him. He's also the one sent off all alone to chase the cat.
* CatchPhrase: "Right". {{Lampshade|Hanging}}d by Parker and Ripley.
-->'''Ripley:''' Whenever he says *anything* you say "right," Brett, you know that?
-->'''Brett:''' Right.
-->'''Ripley:''' Parker, what do you think? Your staff just follows you around and says "right". Just like a regular parrot.
-->'''Parker:''' ''[laughs]'' Yeah, shape up. What are you some kind of parrot?
-->'''Brett:''' Right.
* CharacterDeath: [[spoiler:Brett has the dubious honor of being the first victim of the full-grown Alien. While searching for Jones the cat, he stumbles upon the Alien and is subsequently taken by it.]]
* DeerInTheHeadLights: When the Alien first reveals itself, Brett is frozen in place. He clearly has no idea just what the hell he's looking at, and is transfixed in fascination and horror.
* ImpaledWithExtremePrejudice: [[spoiler:The Alien kills him this way, with it's inner mouth.]]
* NiceHat: Brett's usually seen wearing a baseball cap. He only takes it off to get cool from some condensation.
* OnlyInItForTheMoney: Like Parker, he'll take any chance to chime in if he thinks there's an opportunity to inflate his paycheck.
* ThoseTwoGuys: With Parker, his co-worker and friend. They're always seen together, usually complaining about something or other. [[spoiler:Coincidentally, when Brett does go to do something by himself he gets killed by the Alien.]]

!!Jones the Cat
->'''Played By:''' Cats

->''"Hiiiiisssssss!!"'' (As he saw the beast that slowly rose behind Brett)

The ship's pet, and the only non-human to survive the movie (and ''Aliens'' too). Ripley is particularly attached to him, even going back to retrieve him before leaving the ''Nostromo''.
* [[InfantImmortality Animal Immortality:]] He gets left behind with the Alien when Ripley flees. The Alien inspects it curiously, but thankfully doesn't kill Jonesy.
* CatScare: Just how did Jones get into that locker in the first place?
* DamselInDistress: Former {{Trope Namer|s}}.
* SoleSurvivor: The only creature on the Nostromo to ''not'' die an eventual xenomorph-related death.
* TeamPet: For the crew of the Nostromo. [[AllThereInTheManual External materials]] say that Dallas had him officially exempted from the company's no-pet policy by registering him as needed for vermin control. However, since most vermin would be killed being outside of shielded cryopods during [=FTL=] translation, this was just an excuse to allow him.
* [[WhatHappenedToTheMouse What Happened to the Cat?]]: Jones doesn't show up anymore after the first arc of the second movie. Ripley tells him he's staying there while she leaves for the colony with the marines, so presumably she left him with someone else while she was away (she had expected to come back, after all). If so, then Jones has the happiest ending of any of the characters in either of the first two movies.