History Main / HumanAliens

** The Shiar, who are basically humans with fathers, avian physiology (yet NonMammalMammaries) and enhanced physical abilities.

* The many worlds of the CrossGen universe seem quite prone to humanity as a dominant population. Possibly explained by Geromi in ''Crux'', who mentions a mass exodus from Earth at some point that led to many other worlds being colonized, and that nobody's a true human any more. Discussed in the world-hopping storylines of ''Sigil'' and ''Mystic'', when Sam and Giselle encounter humans on a variety of strange worlds (in fact, it initially takes Giselle a while to realize she's not on Ciress any more). It is worth noting that [[AGodAmI Solusandra]] apparently created many of the worlds depicted and populated them according to whatever theme had struck her fancy at the time. Whether she actually created the human inhabitants as well or simply transported them from elsewhere in the diaspora is unstated.

* If you put it this way, the ''KingdomHearts'' series resolves around space travel, though all the worlds were originally one. Many of them contain humans ([[{{TheNightmareBeforeChristmas}} though there]] [[{{TheLionKing}} are some]] [[{{LiloAndStitch}} exeptions]]), and the human characters you control can be considered aliens. Though the only one ever called that, indirectly, was Terra, [[spoiler: when he was "saved" by Gantu and shown, unconscious, to the Grand Counselwoman]].

This trope may be TruthinTelevision: for humans to be able to survive on a planet without {{terraform}}ing or protective technology the planet needs to have the correct conditions for humans to have evolved there. Some scientists believe that this means that if we find any human-inhabitable words there will probably be aliens there that look just like us!

This trope may be TruthinTelevision:for a planet to truly support human life without {{terraform}}ing, protective bubbles, or other technology to protect us from the elements, the conditions must be right for humans to have evolved there to start with. Some scientists debate that this means any aliens we encounter that come from human-inhabitable worlds have a good probability of looking like us.

This trope may be [[Truth in Television]]:for a planet to truly support human life without [[terraform]]ing, protective bubbles, or other technology to protect us from the elements, the conditions must be right for humans. Some scientists debate that this means any aliens we encounter that come from human-inhabitable worlds have a good probability of looking like us.

* Mostly averted in the StarWars series. It does feature a few human-looking (possibly) aliens, although those may just be human colonies. It also features plenty of RubberForeheadAliens. But then there are also many species that are very non-human-looking. It's a richly diverse galaxy.

* The various biological species of TheCulture are mostly human-looking, although they have various additional internal glands and bits. Given the degree of casual genetic modification in the universe though, it's anyone's guess as to whether they were all always like that.
** In ''The Use of Weapons'', Shias Engin asks Zakalwe "I know that all the outworlders aren't humanoid, but a lot are. How come?". Zakalwe replies jokingly that it is the universe's way of getting rid of alcohol.
** Some of them ''are'' human, a result of TheCulture grabbing some of them to spread out across the universe.

* In UrsulaKLeGuin's series the Hainish Cycle, this is because all the humanoid races are from planets colonized by the titular Hainish. Including Earth humans. Despite a common ancestry, they don't all look like us. The Cetians are hairier, for example, and the Athsheans are green (fairy green, not Martian green) and diminutive.
* In JamesPatterson's ''The Dangerous Days of Daniel X'', the aliens on Daniel's home world, Alpar Nok, look exactly like humans. The planet even [[AllPlanetsAreEarthLike looks like Earth]].

*** The beavers in ''The Lion The Witch And The Wardrobe'' claim she was descended from Lilith, which just raises further questions. Of course, they aren't exactly experts on Jewish apocrypha.

* The NoonUniverse novels of the Creator/StrugatskyBrothers feature a lot of PlanetOfHats Human Aliens civilizations, though their cultural, technological and historical development is rarely 100 % identical to that of the Terrans. [[PlayingWithATrope Among the most inventive examples]] are the people of the planet Saraksh, whose entire philosophical and religious system has been heavily influenced by the immense optical refraction phenomenon present in the atmosphere of their homeworld. From the surface it looks like the horizon is above the observer, which makes the Sarakshans think that they actually live inside a hollow cave in an endless piece of rock, rather than on a round planet floating in space. They call all who claim otherwise [[PardonMyKlingon "Massaraksh"]] ("of the world inside-out"), a term which is also an UnusualEuphemism for "insane".

* [[JustifiedTrope Justified]] in SergeyLukyanenko's ''Literature/ALordFromPlanetEarth'' trilogy, where all races in the Milky Way (except [[spoiler:humans]]) have been [[{{Panspermia}} seeded]] by a mysterious [[{{Precursors}} precursor]] race. Played straight with Human Aliens from a faraway galaxy.
* Thomas in ''TheManWhoFellToEarth''.

* Niles Van Roekel in MarvelNemesis.

* ''RaceToWitchMountain''. The aliens look ''exactly'' like humans... but then there's the superpowers.
** When Dwayne Johnson's character [[InvokedTrope points this out]], they [[{{Handwave}} respond]] with "What's an alien ''supposed'' to look like?"
* [[RockyHorrorPictureShow Dr. Frank N Furter, Riff Raff, Magenta, and the other Transylvanians]] look like normal (well, normal except for their sexual practices) human beings. Considering that the film is an AffectionateParody of old B-Movie science fiction films, it's no surprise.

* A similar notion extends to ''YuYuHakusho'', as quite nearly all of the show's most powerful demons appear human.
* Jumping on the bandwagon, the Hollows/Arrancars in ''Manga/{{Bleach}}'' follow this trend as well. Granted, they're corrupted human souls. The Soul Reapers have no such excuse, so far.

* Olimar and others from Hocotate in ''{{Pikmin}}''. It's implied that he lands on Earth AfterTheEnd. Olimar is extremely small, not even being 2 centimeters in height.

* ''Series/KaizokuSentaiGokaiger'' features space pirates who come to Earth at the beginning of the series, so they do fit this trope. With the exception of the AscendedFanboy SixthRanger from Earth, that is.

* Double-inverted in the "Treehouse of Horror" spoofs every Halloween on ''WesternAnimation/TheSimpsons''. [[ThoseTwoBadGuys The two Rigelian aliens]], Kang and Kodos, don't look human at all, but like hideous, slimy, cyclops-faced green squids. However, they ''do'' speak English perfectly; they claim they are actually speaking "Rigelian", which, [[HandWave "by an astonishing coincidence"]], happens to be exactly the same as English. It's also revealed in the comics that Kodos is female, even though she has the same deep "male" voice as Kang.

* In ''Series/StargateSG1'' and ''Series/StargateAtlantis'', the "humans" in Pegasus and the Ori galaxy were seeded by the Ancients through genetic engineering, and are not directly descended from them, despite the use of the term "ancestors" in Pegasus. The humans on Earth presumably came about the same way. Humans were not seeded on any other Milky Way planet, the Goa'uld brought them to those worlds from Earth.
** There are a few occasions where the trope is played straight, however. Most notable are the Nox, who can only be differentiated from humans by their big, poofy hair. There's also the one-shot race from "One False Step", who look like humans with white paint smeared all over their bodies.

* {{Inverted}} [[PlayedForLaughs For Laughs]] in ''InvaderZim''. [[VillainProtagonist Zim]] looks nothing like a human (having green skin, antennae and no nose or ears), but with a minimum of effort absolutely nobody on Earth notices except for [[HeroAntagonist Dib]].

** The people of Homeworld in ''{{Micronauts}}.'' It was eventually explained that they and the RubberForeheadAliens of the Microverse are descended from humans from [[TimeTravel the future]].
** Nebulans from ''[[{{Comicbook/TheTransformers}} The Transformers.]]''

* Captain Crandall of ''TeamoSupremo'' claims to be from another planet, despite the fact that he looks too much like his "Earth-mom" to possibly not be her child.
* Subverted in ''Monster Buster Club''; Cathy seems like a Human Alien at first glance... but various lines indicate that this is just a human disguise like we see on other aliens in the series, and her true form hews closer to the StarfishAliens trope.
* Double-inverted in the "Treehouse of Horror" spoofs every Halloween on ''TheSimpsons''. [[ThoseTwoBadGuys The two Rigelian aliens]], Kang and Kodos, don't look human at all, but like hideous, slimy, cyclops-faced green squids. However, they ''do'' speak English perfectly; they claim they are actually speaking "Rigelian", which, [[HandWave "by an astonishing coincidence"]], happens to be exactly the same as English. It's also revealed in the comics that Kodos is female, even though she has the same deep "male" voice as Kang.

* The Zentraedi of ''Anime/SuperDimensionFortressMacross''/''{{Robotech}}'' and its descendants are one of the clearer examples of the trope, straight down to the HandWave concerning their origins being linked to that of humanity. The primary physiological difference being that in their natural state they are ten meters tall, but can through an [[CloningBlues ill-defined process]] be shrunk down to roughly human size (or expanded back up).

* ''Series/TheTwilightZone'' episode "Third from the Sun" appeared to show two families preparing to travel to a planet of Human Aliens. [[spoiler: At the end it is revealed that ''they'' are the Human Aliens and the planet they are traveling to is Earth.]]