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Alien Among Us
aka: Aliens Among Us

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"Hello, friends! I am a perfectly normal human worm baby. You have nothing, absolutely nothing, to fear from me. Just pay no attention to me and we'll all get along just fine."
Zim the Irken, Invader Zim, "The Nightmare Begins"

A being from outer space generally comes to Earth either to observe and learn about us or to help guide us (or just get stuck here) and must keep his true nature a secret. A good opportunity for Mr. Exposition to make his presence felt as the alien often needs everything explained, or describes the situation for others of his kind who might share his curiosity. A lot of comedy can be drawn from the newly landed alien having No Social Skills.

Alternatively, the alien or aliens could be stranded and unable to leave. If they want to return home, they'll never get to, making Earth their Gilligan's Island. Often, the alien will eventually lose interest in leaving, and if given the opportunity will refuse it. This is usually the case when they form strong attachments and relationships to Earthlings, such as becoming friends with a human roommate.

Tends to grow less and less plausible the longer a series lasts, as evidenced by the difficulty many viewers had with the idea that the 3rd Rock from the Sun aliens would not know about taxes after four years in the United States.

If the main character is from our world (or one close to it) and the setting is another, that's Trapped in Another World. A whole community of Aliens Among Us, living here for a while, will probably form a Wainscot Society.

Compare First Contact. See also Hugh Mann, Amusing Alien, Humanity Ensues, Raised by Wolves, Fish out of Water, Mysterious Waif.

Not to be confused with Among Us.


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    Anime & Manga 
  • This was the starting premise of Kenichi Sonoda's Cannon God Exa Xxion manga, where aliens called the Riofaldians came to Earth in peace, bringing their advanced technology with them and have been coexisting with humans on Earth for several years. Of course, they were secretly infiltrating us to set us up for conquest all along (the weapons technology they gave us is ineffective against their REAL weapons) and this appears to be standard operating procedure for them.
  • Dragon Ball: Pretty much every other character, mainly Goku, Piccolo and Vegeta. Even Gohan pulls this off for a bit at the beginning of the Buu arc — despite being born and raised on Earth, his childhood was still wildly abnormal and he has a hard time blending in.
  • In JoJo's Bizarre Adventure: Diamond is Unbreakable, Mikitaka claims to be an alien living among humans. It's ambiguous whether or not he's telling the truth, but if indeed he is an alien, the world shown in JJBA is so weird and chaotic that his unusual appearance, eccentric demeanor, and weird powers actually do nothing to prevent him from blending right in. It helps that he's a Rubber-Forehead Alien living in a world where humans typically look at least a little extraordinary, and his Voluntary Shapeshifting abilities are small potatoes compared to the Lovecraftian superpowers frequently displayed by many Earth-born characters.
  • Magical Girl Lyrical Nanoha A's has the crew of the Arthra set up shop on Earth during the Book of Darkness case, and Lindy ends up moving her entire family there after the season is over (partially so that Fate could continue attending school with her friends, but mostly because she's a Japanophile).
  • My Monster Secret has Aizawa Nagisa and her brethren, a race of Lilliputian aliens who interact with humanity in a Mobile-Suit Human. They look and act every bit like humans, except Nagisa constantly talks like she's on a battlefield and takes everything way too seriously.
  • Shows up twice in the Onegai franchise, with an alien observer disguised as a high school teacher in Please Teacher! and an alien castaway disguised as a high school student in Waiting in the Summer.
  • UFO Robo Grendizer: The initial premise of this sequel, is alien prince Duke Fleed and his sister Maria arrived at Earth running from his homeworld's destruction, and he chose living on our planet (he might leave at any time, but having no home to return to, he sees no point), pretending being a normal human with assistance of his surrogate father. However, Kouji Kabuto suspected he was not a normal person when he met him for first time, and playing his charade gets increasingly hard due to the VeganAlliance invasion he has to fight, in such a way that all of his acquaintances know his real self after the first season. Finally, after the Grand Finale he and his sister return to planet Fleed to help to rebuild it.
  • The characters from Sonic X can communicate with the humans whose world they fall into without any difficulty. The Sonic from Sonic the Hedgehog (2020) also works the same way.
  • Lala from Star★Twinkle Pretty Cure is a Human Alien who lands on Earth and befriends the human Pink Heroine, Hikaru. She averts Aliens Speaking English at first, but once the two of them become Magical Girl Warriors, the Transformation Trinket takes care of translating. Though there's an Alien Non-Interference Clause, she gets around it by enrolling into school as a human, where her odd behavior sometimes raises eyebrows. She also brings along the squid-like alien Prunce, who usually disguises himself as Lala's backpack. Later on, they also take in a Cat Girl alien named Yuni, who doesn't enroll in school and just kind of hangs out in tree branches until she's needed.

    Asian Animation 
  • Lamput: In "Alien Again", Slim Doc and an alien who looks a lot like him inadvertently switch places. The alien, after realizing he can mimic Slim's appearance easily, does a good enough job at blending in with the other docs that nobody notices he's an alien by the time he and the actual Slim return to their proper places.

    Comic Books 
  • Icon: A Superman Substitute who landed on Earth just prior to the American Civil War and took the form of a black slave. As a result of having a longer lifespan than humans, he has been forced to take multiple identities over the last century by pretending to be his own descendant. In the Modern Day, his current identity is Augustus Freeman IV, the Great-Grandson of his original persona, who is inspired by a young teenage girl named Raquel to use his powers to help others as the Hero: Icon, with Raquel becoming his Sidekick: Rocket.
  • Martian Manhunter: The last surviving Martian who was accidentally transported to Earth and has been forced to live here since. Also applies to his adopted niece, Miss Martian, who is a member of an offshoot species referred to as White Martians. Both of them are able to blend in thanks to their Voluntary Shapeshifting ability, but struggle with loneliness over being the last survivors of their respective races.
  • Pictured above, Resident Alien has a benign alien crash-landing on Earth and taking on the persona of a semi-retired doctor. At first, he lives in a cabin deep in the woods so as not to draw attention to himself. However, he reluctantly gets involved with the lives of the residents of a neighboring town when their only other physician dies - with no replacement readily available - and slowly becomes more and more used to once again experiencing a social life and contact with fellow sentient beings.
  • The Marvel hero Sleepwalker, who had his own comic book in the early 1990s. Fortunately, since he spent all his time fighting monsters in his home dimension, he was able to make the best of being trapped on Earth by fighting supervillains and catching criminals, all while defending humanity from demons native to the Mindscape.
  • Starfire (2015): Starfire's objective in the series is to culturally assimilate into human society, but she doesn't really try to pass off as a human. Yet despite her bright orange skin and Flaming Hair quite a few citizens seem to mistake her for a pretty human girl with an exotic tan.
  • Supergirl:
    • While this is not really the case for Superman, since he was raised here, it is often the case for his cousin Supergirl, who came here as a teenager. The version that probably gets the most milage out of the concept is Supergirl: Cosmic Adventures in the 8th Grade
      Linda: What's money? Is it important?
    • In Many Happy Returns, Kara Zor-El -aka, Pre-Crisis Supergirl- arrives on the Post-Crisis universe. Linda gets Kara enrolled at her high school, and Kara does her best to blend in, but she is a fifteen-year-old girl who comes from another planet and reality. She simply doesn't fit in, and her schoolmates think she is some kind of freak.
    • In Supergirl: Being Super, Kara also has trouble fitting in and understanding Earth's customs and traditions.
    • In her second solo book, Kara explains she felt like a fish out of water at the beginning. Earth was primitive and mundane compared with Argo City.
      Kara: Earth was kind of disappointing at first. All I could see was that it wasn't Argo City... didn't have the scientific majesty of my home world. And most importantly, it didn't have my parents!
    • Subverted in the fifth volume. At the beginning, Supergirl feels she doesn't understand Earth or Terrans and she doesn't fully fit in. But then she and Superman rescue Kandor and Kara finds she doesn't fit in with Kryptonians anymore either because she got used to thinking and acting like an Earth woman.

    Fan Works 
  • The idea of the Sgt. Frog fanfic One Hundred Days (Sgt. Frog). Aliens are now in Arizona.
  • Supergirl (2015) story Survivors starts out with Kara and her baby cousin crash-landing on Earth. Being an orphaned teenager stranded in a primitive alien world full of strange creatures and sentient beings that speak incomprehensible languages and have odd customs, Kara makes an effort to keep herself and her cousin out of sight until she is found and taken in by a human family.
  • The author of Future Shock spares no expense to remind us how utterly alien Kryptonians can be at times, and that doesn't even get into the other aliens who are introduced throughout the series. Probably the most noteable example is that Kryptonians have an entire sign language for giving orders to servitor droids without interrupting a conversation.

    Film — Animated 
  • Happens in Scooby-Doo and the Alien Invaders. Shaggy and Scooby's new girlfriends, Crystal (for Shaggy) and Amber (for Scooby), are eventually revealed to be aliens—specifically ones from a planet about twenty lightyears away from Earth. After the villains are apprehended, Crystal and Amber have to return to their home planet and are forced to ends things with Shaggy and Scooby, but they at least share a heartfelt goodbye with them.

    Film — Live-Action 
  • The Cat from Outer Space has the alien cat named Jake crash-landing on Earth. Aware that his presence may cause conflict, so he tries to leave as quickly and quietly as possible.
  • Husband and wife Beldar and Prymat end up stranded on Earth in Coneheads, but claim they are from France.
  • Cowboys & Aliens has Ella, the Mysterious Waif.
  • DC Extended Universe:
  • Tony and Tia from Escape to Witch Mountain are orphaned children who don't know who they are or where they came from, except for Tia's dim memories of a shipwreck. They also have an assortment of Psychic Powers. Turns out they're aliens, and the shipwreck was the ship that took them to Earth crashing in the ocean.
  • The Girl From Monday: An alien called only "Nobody" has come to Earth in human form. It's later revealed Jack too is an alien, who came earlier.
  • Lloyd Gallagher, the FBI agent in The Hidden, is actually an alien inhabiting someone's body. He is quite well adapted to life on Earth, but is still awkward and doesn't know how to take a aspirin, for example.
  • It Came from Outer Space (1953)
  • In Men in Black the M.I.B allow aliens to live on Earth as long as they are registered, wear their human disguises when they're outside, and don't cause any trouble. Some of them are even under constant surveillance.
  • The central plot of the Sonic the Hedgehog (2020) movie universe. The main character is an alien hedgehog who escaped to Earth when he was an infant, spent the next 10 years living in the woods, and meets a sheriff of a small town. The sequel expands on this.
  • Stepsister from Planet Weird has a father and daughter be political refugees hiding out on Earth from the dictator of their planet. They are actually sentient bubbles, but they have taken human shapes after arriving to Earth via a portal. They are still instinctively afraid of strong winds.
  • The main character in Suburban Commando is a Human Alien stranded on Earth due to a mishap with his spaceship. He ended up having to rent a room in a house owned by a nuclear family to live in while he's getting his ship fixed.
  • In Thor, the titular character, a Sufficiently Advanced Alien is stranded on Earth as a punishment.
  • Station engineer Philo in UHF.
  • Ultraman Mebius and the Ultra Brothers: The first four Ultra Brothers - Ultraman, Ultraseven, Ultraman Jack and Ultraman Ace - lose their powers in the Action Prologue and ends up in the city of Kobe, where they spend the next 20 years living perfectly normal lives amongst humans.
  • Voyage of the Rock Aliens: In a diner, the aliens clumsily attempt to pass for human by intently studying random objects and pouring condiments into their mouths.
  • In the Czechoslovak film Wolfs Hole, it's eventually revealed that Daddy, Dingo, and Babeta are aliens who have come to Earth to conquer it for their race, as they ruined their own homeworld's ecology through overpopulation due to their Healing Factor, which essentially makes them immortal. They're running experiments on the teenagers at the ski lodge to figure out how to best turn humans against one another. The teens eventually escape after setting the lodge on fire, which kills the aliens, since they need the cold for their Healing Factor to work.

  • Ax in Animorphs. He actually spends most of his free time hiding in the woods, but occasionally morphs into a human form and tries to pass as an ordinary human. Given that his mouthless species doesn't speak verbally or have a sense of taste, it takes him a long time to get the hang of it. Turns out it runs in the family; though we don't see all the details, his brother Elfangor once did the same thing, even having a child with his human friend Loren.
  • Mikhail Akhmanov's Arrivals from the Dark series has an alien character whose name roughly translates as Exile. He is a Proteid (or Metamorph), a species of Voluntary Shapeshifters, whose hat is observing other races using their shapeshifting and Psychic Powers. Exile has a rare genetic disorder that only allows him to fully shapeshift once, at which point he is stuck in this form for life (and they're, effectively, immortal), only able to make small cosmetic alterations. He chooses to be an observer on Earth and arrives in the 13th century during the Mongol invasion. He has secretly observed humanity, only interfering occasionally to subtly boost progress. When the Faata arrive to conquer Earth, humanity is far from ready to take them on, still being stuck in the Solar System and lacking advanced weapons. Exile gives the humans the means to destroy the Faata ship in such a way that it can be studied and its technology reverse-engineered. Since then, Exile has taken a slightly more active role in helping humanity, although he has always remained in the shadows, revealing himself to a select few individuals and changing identities (and faces) every so often.
    • Inverted in the Trevelyan's Mission books, which take place centuries later in the same 'verse, with the titular protagonist and his colleagues, whose job is to infiltrate primitive humanoid cultures in order to study them and accelerate their progress.
  • Demonic Household: The man who gives the protagonist the bug zapper in “Zapping Filth Away” is actually an insectoid alien in a human suit. He then secretly records him shocking himself on it again and again so he can put it on the alien equivalent of the Internet.
  • The Devil is a Part-Timer!: Satan Jacob, a demon lord from the magical world of Ente Isla, is forced to flee to another dimension with his most loyal general Alciel. Unfortunately, that world is the Shibuya ward of Tokyo, Japan on modern-day Earth. Brought Down to Normal by the lack of magic, "Maou Sadou" is forced to take a job at a fast-food restaurant while his room-mate "Shiro Ashiya" tries to find a way home.
  • Haruhi Suzumiya:
    • Yuki Nagato is a humanoid interface created by an alien group called the Data Integration Thought Entity, being sent to Earth to observe the titular Haruhi Suzumiya due to the latter's Reality Warper abilities. It's later revealed that Ryoko Asakura is one as well, though she's much better at passing as a normal human girl than Yuki (at least until she decides to kill Kyon with a knife just so she can get an observable reaction from Haruhi).
    • Kuyou Suoh is from a different alien organization, the Canopy Domain, which is implied to be so alien that they don't even have any kind of language. Kuyou was sent to Earth to learn how to communicate, but she's so incredibly alien in her behavior despite her human appearance that she comes across as rather unsettling.
  • Ford Prefect in The Hitchhiker's Guide to the Galaxy, in the fifteen-year exile set before the main action of the first book. Downplayed heavily because he actually blends in quite successfully, apart from the choice of name, and it's his human friend Arthur Dent who ends up being the subject of all the Fish out of Water comedy after their abrupt departure from the planet Earth.
  • "I'm A Stranger Here Myself", a short story by Mack Reynolds. Two western expatriates in Tangier are discussing a news article on the Flying Saucer craze, and the usual Alien Among Us theories. One scoffs at the idea, pointing out that with the vast number of police, security and counter-intelligence agents on Earth, one of these alien observers would be bound to slip up and get caught. His companion responds that Tangiers, as opposed to one of the major capitals like New York or London, would be a perfect place to hide out, as no-one plays attention to anyone's business. It turns out that both men are aliens, but rather than being there for the expected noble reasons, one is harvesting human protein, the other is stirring up wars and tribal conflicts for alien thrill tourists. Which, the first one points out sourly, could spoil an awful lot of good meat.
  • In the book and film The Man Who Fell to Earth, the being that calls itself Thomas Jerome Newton comes to Earth in order to help his own people, and in doing so embetters humanity as well by introducing alien technologies to Earth. In the end, the government learns what he is and captures him. He ultimately cannot complete his mission, and the story ends with him as a disillusioned (and in the book, blinded) alcoholic who will live out his life on Earth.
  • In the short story "On a Clear Day You Can See All the Way to Conspiracy" by Desmond Warzel, there are two aliens among us—one was sentenced to live here, and the second is here to keep an eye on the first guy.
  • Subverted in the Lawrence Watt-Evans short story "One of the Boys", a Deconstruction of Superman, about an alien that looks human and was raised on Earth all his life, but is still painfully, dangerously alien.
  • Zenna Henderson's The People stories are about a race of Human Aliens with Psychic Powers who fled to Earth after their homeworld was destroyed.
  • The children's book Stinker from Space by Pamela F. Service is about an alien who is fatally wounded when he crash lands on Earth while fleeing enemy aliens. He has the ability to transfer his consciousness/intelligence into other bodies, which will save his life. Unfortunately, the only compatible body within range is that of a skunk. Hence the title. He spends much of the book trying to pass himself off as a tame, deodorized skunk so that people won't shoot him while he tries to repair his ship in secret.
  • Area 51: Initially humans in the know think the aliens whose technology they've gotten hold of left millennia ago. This turns out to be wrong-some never left, and have been manipulating humanity from the shadows. Once their past presence has been made known, they reveal themselves fully.
  • Isaac Asimov's "Does a Bee Care?": Kane is a member of an alien race whose life-cycle involves being deposited on planets as an ovum, and when they hatch into their larval form, they take the shape of the dominant intelligent life, and hide amoung them until they develop spaceflight. Once they get into space, they Metamorphose again, to their adult form; a Space Whale.

    Live-Action TV 
  • 3rd Rock from the Sun: The Solomons are a team of aliens who are sent to pose as a human family so they can learn about Earth and study humankind. It's mentioned throughout the series that they've done the "pose as local life-forms" mission on other planets before and that Earth is often more challenging and confusing than they were expecting.
  • ALF crash landed, and had little motivation to leave, but had little problem adapting.
  • The Tenctonese/Newcomers on Alien Nation were refugees and slaves. In this case it was over 100,000 aliens, who form their own community in Los Angeles. Therefore the cultural misunderstandings went both ways, as humans learned to deal with odd newcomer traditions.
  • On the short-lived Jim Henson Productions sitcom Aliens in the Family, an alien and a human fall in love and form a blended family. Oddly enough, their family (which includes a Muppet baby and two older aliens in full body costumes) lives on Earth.
  • Bibi from the French Canadian kid's show Bibi et Genevi?, later translated as BB & Jennifer, was an alien from the planet XY1000Z come to Earth to study it.
  • The character of Anya from Buffy the Vampire Slayer could also be considered a variation on this device. Anya was a 1,120-year-old former demon, who did not understand the conventions of humans and, therefore, had wacky misunderstandings and needed to have things explained to her. Anya eventually subverted this trope in a (according to some) Good Troi Episode which flashed back to show her in her pre-demonic days. Turns out that her inability to grasp the conventions of humans has less to do with her being a former demon, and more to do with her just being very literal-minded.
  • Defiance deals with humans living side-by-side several alien races on Earth that has become a Death World thanks to a malfunction of alien tech. Cultural clashes are common, although most at least try to assimilate and be tolerant.
  • Doctor Who:
    • The Doctor generally avoids telling everyone that they're an alien time traveller, although certain fortunate people do get to find out. They also have psychic paper to help them avoid rousing suspicions when they investigate.
    • "The Zygon Invasion"/"The Zygon Inversion" reveals that, since the events of "The Day of the Doctor", millions of Zygons have been living incognito on Earth, with only UNIT and the Doctor knowing about it.
  • Gabby Duran & the Unsittables centers on the titular character babysitting the children of aliens that are hiding out on Earth.
  • The TV series Hard Time on Planet Earth starred Martin Kove as an alien criminal sentenced to serve out his time on the unimportant backwater planet Earth. Accompanied by his "warden" (a computer-animated flying eye), the protagonist used his inhuman strength to fight bad guys while Walking the Earth.
  • The short-lived Nickelodeon show The Journey of Allen Strange, about a young Energy Being living incognito as a human on Earth.
  • Just Roll With It had an episode with this very trope name and, well, it was the plot for the episode.
  • Season 6 of Legends of Tomorrow reveals that Gary has been an alien all along. Apparently, his assignment was to abduct Sara, but he fell in love with humanity and decided to stay. However, his boss/fiancée Kayla found him and demanded that he complete the mission.
  • The entire fourth season of Lexx uses this to hilarious effect. The crew of the titular ship are from a society so intrinsically different than any on Earth that even when they do figure out how something works, they're completely flabbergasted about it. Examples include confusion over how much machinery and power is used by the space shuttle just to reach the Moon, as well as being unable to comprehend the practice of burying the dead; since the dead were processed for protein back on the Cluster, this seems like, literally, a waste of resources.
  • Four of the BBC's Look and Read educational series for children involve aliens coming to Earth.
    • In 'The Boy From Space', a ship crash lands after one of the three crew members turns on the others out of greed. After teaming up with some humans to defeat him, the alien boy (called Peep-Peep) and his father leave with the mutinous crew member their prisoner.
    • In 'Earth Warp', an alien comes to Earth to recover a pollution-monitoring probe, which is malfunctioning and will blow up if not found soon. Teaming up with some children, he eventually finds it, says his goodbyes and leaves.
    • In 'The Legend of the Lost Keys', it's revealed there have been aliens on Earth for nearly 2000 years. When the good aliens/alien hybrids beat the bad and stop their attempted takeover of Earth, some of the good guys leave for their homeworld to make it a better place while the other good guys choose to stay on Earth.
  • Mork & Mindy once had a clever Lampshade Hanging about this trope when, in one of the last seasons of the show, Mindy exclaimed in exasperation, "Oh, Mork, what Earth concept have you misunderstood this week?"
  • My Best Friend Is An Alien is a rare version where the Rubber-Forehead Aliens are living publicly among humans, and the main character is the son of a diplomat at an alien embassy.
  • My Favorite Martian: "Uncle Martin" is a Martian anthropologist who crash lands on Earth. Martin becomes the house-guest and adoptive "uncle" of reporter Tim O'Hara while he fixes his spaceship. Martin is extremely intelligent and has an array of powers including mind-reading and invisibility. He's also 450 "Martian" years old, and knows more about Earth and its history than most Earthlings, having visited many times before.
  • My Hero (2000): Thermoman is a dim-witted Ultronian superhero who takes on a human alias (George Sunday) on Earth and tries to keep his identity as an alien superhero a secret. However, his unfamiliarity with human life leads to many humorous misunderstandings.
  • My Parents Are Aliens is about two aliens from the planet Valux, who crash-landed on Earth when one of them tampered with the controls of their spaceship. Taking on three orphans, they must learn how to navigate human life whilst making sure that no other human learns that they are aliens (for fear of them being taken away for scientific study).
  • In The Orville, Lieutenant Janel Tyler is revealed to be a Krill named Teleya (many fans figured it out, since they are played by the same actress). Her assignment was to infiltrate the Orville, get Captain Mercer to fall for her, and then have him kidnapped by the Krill for his command codes.
  • The Outer Limits (1995): In "Corner Of The Eye" it turns out that disguised aliens whose real form resembles demons are living on Earth.
  • Out of This World (1987): Evie must keep her half-Anterian powers a secret from the rest of the planet and since she was born and raised on Earth, she sometimes explains concepts to her alien dad.
  • Trip from Power Rangers Time Force, sort of, since apparently aliens aren't as common in the year 2001 as they are in the year 3000.
  • Roswell: An adaptation of the Roswell High books about three teenagers who were stranded on earth as children with no memory of what planet they come from.
  • Roswell, New Mexico: Is a re-adaptation of the Roswell High books set ten years after High School, with the main characters being in their mid-late twenties.
  • In Star Trek: Discovery, it's eventually revealed that Lieutenant Ash Tyler is, in fact, a Klingon Manchurian Agent named Voq, whose personality has been suppressed with the memories of the real Tyler put on the surface. Eventually, the conflict between the two personalities nearly kills him, so Voq's Love Interest L'Rell is forced to remove the Voq personality, effectively turning him permanently into Ash Tyler, except he now has access to all of Voq's memories.
  • The Star Trek: Enterprise episode "Carbon Creek" has T'Pol tell Archer and Trip the story of her great-grandmother T'Mir, who crash-landed in the titular town on Earth in 1957 along with another Vulcan named Mestral. While they did seem a little weird, they didn't have too much trouble keeping below the radar, which is no mean feat in the midst of Cold War. In fact, Mestral finds Earth's culture to be fascinating and even develops friendships and, possibly, romantic attachments. T'Mir tries to stay focused on going back to Vulcan, only interfering once to help a bright kid get into college (by selling a velcro pouch to a businessman and leaving the money to the kid). Mestral opts to stay on Earth, and T'Mir lies to the crew of the rescue ship that he died. Presumably, he lived out his life on Earth and died, keeping his true identity a secret.
  • On Top Gear (UK), one possible explanation for The Stig. Granted, there are many...
  • Tracker: Cole/Dagon doesn't really make much effort to blend into human society. His speech is strange and monotonous, although it gets better in later episodes. He has trouble understanding things we take for granted (such as trying to explain to Mel, who knows who he really is, what Star Wars is). Even bathing is new to him, though that’s possibly justified since his species are indicated to be Energy Beings. It's a lot easier for the alien fugitives, since they were forced to take human bodies to survive and absorbed their skills and memories. Cole arrived on his own and took on human form from an underwear ad.
  • Ultra Series
    • Ultraseven, Ultraman Leo, Ultraman 80, Ultraman Mebius and Ultraman Orb feature the titular Ultras having human forms rather than hosts.
    • Ultraman Ginga also plays with this trope as well, with Spark Dolls, compacted forms of either kaiju or Ultra following an incident known as the Dark Spark War.
    • Ultraman X features an alien as part of the main cast as part of Xio's science department, with a episode having several aliens living on Earth disguised as humans. In Ultraman Orb and Ultraman Geed, Earth has a good-sized alien population living in secret. The latter series even features an organization called the Alien Investigation Bureau that deals with troublemaking aliens and deports them. Geed is also himself an Ultra in human form, but unlike the others he was unaware of his true nature as everyone else.
  • Korean sitcom Vampire Idol. An alien vampire prince and his three bodyguards are stranded in Seoul when their space ship crash lands. They develop friendships and love interests as they train to be kpop idols.


  • Fesxis from Dawn of a New Age: Oldport Blues came from another world and shacked up in the body of the earth-bound Sebastian to serve as his protector. While she's been around long enough to understand most of Earth culture, humour is still drawn from her lack of patience for mundane Earth problems, and her eagerness to solve them with murder.

    Tabletop Games 
  • In Dark•Matter (1999), there are several aliens who hid on Earth, with some who tried to prepare them for the High Tide.

  • The premise of most Transformers series starts here.
  • This is also the premise of Novi Stars, which is about a group of teenaged aliens eager to learn about Earthling life, and even experience Earthling teenhood for themselves.

    Video Games 

  • In Coffee Talk, Neil tries blending in with the other patrons by learning their culture and etiquette, and in the Stinger, they become a human to fit in better and hide from the authorities. In Episode 2, Amanda, another alien of the same species as Neil, arrives on Earth to research on it, but they start out awkward by They start out awkward at first by calling Lua, a succubus, a "purple Earthling", and then a "four-appendages Earthling" after she tries correcting them.
  • Escape From St. Mary's: There's an alien in the school, says an agent you meet. Whoever it is has decided to blend as a student or teacher.
  • Part Time UFO: Despite being a sentient UFO, Jobski adjusts fairly well to Earth life and makes a lot of friends (and money) doing part-time jobs for various people. It helps that Jobski's not the weirdest thing there, what with the talking statues, mecha laboratory, and technicolor fish it encounters. Ankh is heavily implied to have been one of these as well, though she's established herself as a shopkeeper for galactic goods.
  • The Sims 2 has aliens that will abduct your sims and implant males with hybrid offspring. In Strangetown, a retired (male) Pollination Technician has married a sim woman, and they're raising their children together. Two of his adult offspring (from when he was active) are looking for roommates in the Sim Bin.
  • In Super Robot Wars 4, Super Robot Wars Compact and Super Robot Wars GC, Heavy Metal L-Gaim shows up in the game and its protagonists observe the other characters and the overarching plot.

    Web Animation 
  • AstroLOLogy: "Outerspace Imagination" centers around Pisces being convinced that Aquarius is an alien. He's not, but at the end, it turns out that Gemini are.

  • In At Arm's Length a person from a different universe appears on the roof top of a bar, which the Heroines of the story just happen to be at the time. They quickly attempt to disguise him as a native, so not to raise questions later by the general public.
  • El Goonish Shive has the Uryuoms, an entire species of aliens living on Earth more or less unnoticed by all but a few (it helps that they have natural shapeshifting powers). Some even object to being characterized as aliens since they were born in the USA (where the series takes place), and thus are legally natural-born citizens.
    William: I could run for president!
    Gillian: You'd lose, though.
    William: Oh yes. By a landslide.
  • Summer's classmate Uma from Everyday Heroes. Even though she and her father resemble cows, no one has mentioned this or even noticed... apparently it's Someone Else's Problem.
  • Done to an extent in Get Medieval, where the characters are aliens but also bear a distinct likeness to twenty-first century humans in terms of ideas and culture. Unfortunately for them, they landed in Earth's 12th century Europe.
  • Girls in Space main character Zoe Strider is marooned on Earth, in Edinburgh, Scotland.
  • In Jix the titular character, Caligos, Dyonus, and Dyona (the latter two being droids made by the aliens) are all aliens living with a Polynesian couple.
  • Killroy of Killroy And Tina is a warlord who was sent to Earth and bonded with the other title character both as punishment and as Gambit Roulette.
  • In Sluggy Freelance Aylee is a double duty alien (she's from another planet and from another dimension). Even after 11 years, she's still very much the Raised by Wolves character.
  • Dabbler, in Grrl Power, is a Succubus — which counts as 'alien' in this universe. She's apparently on Earth to learn what Terran humans are like (as it turns out, there are several million humans in the greater galaxy, for various reasons). Until the very public reveal that aliens exist, her abilities and appearance are explained as being a 'super' with a "battle form".
    • Also there are tourists, who usually use some sort of disguise to visually fit in as they go to the clubs.

    Western Animation 
  • American Dad!'s Roger is an alien that freeloads off the Smith family, in a seeming parody of ALF. He doesn't drive the entire series' plot, but often drives a whole episode.
  • Astronut, from the Terrytoons studio, crashes on Earth and becomes the companion of earthling Oscar Mild. He originally appeared in two episodes of The Deputy Dawg Show.
  • Biker Mice from Mars had this with the Planet Looting plutarkians. One example being Limburger.
  • Dorg Van Dango: One of the Magicals, RD, is an amorphous, shapeshifting alien. He's also the one who can arguably pass best as a human.
  • In The Fairly OddParents!, alien prince Mark Chang flees to Earth to escape an Arranged Marriage. He grows to like it enough that, even after the Story Arc is resolved, he doesn't go back.
  • Four Eyes! is about an 11-year alien girl from the planet Albacore 7 who is sent to a boarding school on Earth by her parents for flunking the fifth grade. She keeps her true identity secret from the humans using a device shaped like glasses to turn herself into a human girl.
  • Parodied to no end in Invader Zim, where the alien doesn't do much to hide his identity, yet it somehow works, because everyone else is so stupid that he can pass himself off as a human just by wearing a wig and contact lenses, not even bothering to hide his green skin.
  • In the French cartoon "Jamie's Got Tentacles", has Jamie, an alien prince who is hiding on Earth from aliens who want to eat him. He befriends a human boy called Erwin and lives with him in his house while wearing a human costume. Most plots are usually about Erwin trying to stop other people from finding out Jamie is an alien.
  • Some facets of the Looney Tunes franchise apply this to Marvin the Martian, particularly in The Looney Tunes Show (although he still technically lives on Mars). To be fair, when more than half the cast is humanoid cartoon animals, it seems perfectly normal compared to other examples.
  • Glomer, from the Punky Brewster cartoon, hails from Chaundoon, a land inside a rainbow where his type—a "glomley"—serve as leprechaun helpers. When Glomer strays from the rainbow and the rainbow disappears, he's stranded in Chicago. But Punky takes him under her care, keeping him a secret from her foster father Henry Warnimont all the same.
  • The premise of Ready Jet Go! is that the Propulsion family, who are aliens from the planet Bortron 7, live on Earth in order to learn about it for a travel guide, but they must hide their identity. The only people who know are Mindy, Sean, and Sydney.
  • A rare example where there are no humans involved; Ema from R.O.B. the Robot is an alien among a group of robots.
  • The Seven Little Monsters episode "April Fools" has a boy named Maurice audition for the monsters' play and subsequently help One, Two, Three, Six and Seven get back at their brothers Four and Five by playing a prank that involves him pretending to be an alien from Jupiter out to get the two pranksters. At the end of the episode, it turns out he really is an alien from Jupiter and was only posing as a normal human boy, but he fortunately has no malevolent intentions and only wants to bring a copy of Three's play script to his home planet so it can be used to entertain his people.
  • All of the Crystal Gems from Steven Universe apply, though Garnet, Pearl, and Rose had been on Earth for thousands of years and are familiar with the planet by the time the series starts, and Amethyst was made on Earth (though they don't seem to have spent much time with humans, so they're not familiar with certain human customs). Peridot, a recent arrival to Earth, struggles to understand things. That said, they're not trying to keep themselves secret—humans simply don't notice or care that they're aliens.
  • T.U.F.F. Puppy has a minor recurring gag where it was implied Keswick is actually an alien.

Alternative Title(s): Aliens Among Us