List of extraterrestrials in fiction
From Wikipedia, the free encyclopedia
This is a list of extraterrestrial species that have appeared in various works of fiction featuring aliens.
Contents: Top - 0–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
- Aaamazzarite (Star Trek)
- Aalaag (Gordon R. Dickson's Way of the Pilgrim)
- Abe (Abe's Oddysee)
- Abh (Crest of the Stars)
- Abydonians (Stargate SG-1)
- Abyormenites (Hal Clement's Cycle of Fire (floating balloons - one race, that is))
- Acamarian (Star Trek)
- Acquarans (Farscape)
- Advents (Guyver) (rumored to be groups of different aliens, also known as Uranus or the Creators)
- Aenar (Star Trek)
- Aeodronians (Battlelords of the 23rd Century)
- Affront (Iain M. Banks' Excession)
- Akaali (Star Trek)
- Akritirians (Star Trek)
- The Alien (Satyajit Ray's The Alien and Banku Babu's Friend)
- Alkari (Master of Orion)
- Allasomorph (Star Trek)
- Amaut (C. J. Cherryh's Alliance-Union universe)
- Altarians (Galactic Civilizations)
- Amnioni (Stephen Donaldson's The Gap Cycle)
- Amorphs (Schlock Mercenary)
- Anabis (The Voyage of the Space Beagle by A. E. van Vogt)
- Ancients (Farscape)
- Ancients (Stargate SG-1)
- Andalites (K. A. Applegate's Animorphs)
- Andorians (Star Trek)
- Andromeni (Battlelords of the 23rd Century)
- Androsynth (Star Control)
- Angol Mois (Sgt. Frog)
- Angosians (Star Trek)
- Annihilus (native of the Negative Zone (Marvel Comics))
- Antarans (Master of Orion II)
- Antarians (Imperium Galactica II: Alliances)
- Antedeans (Star Trek)
- Anticans (Star Trek)
- The Anti-Monitor (DC Comics)
- Aqualish (Star Wars)
- Aquatoids (X-COM: Terror from the Deep)
- Arachnids (Battlelords of the 23rd Century)
- Aras (Perry Rhodan)
- Arbryls (Ascendancy)
- Arburian Pelarota (Ben 10)
- Arcadians (Star Trek)
- Arceans (Galactic Civilizations)
- Arcturians (Star Trek)
- Argolin (Doctor Who)
- Arilou (Star Control)
- The Arisians and Eddorians (E. E. Smith's Lensman novels)
- Ark Megaforms (Noon Universe)
- Arkonides (Perry Rhodan)
- Arnor (Galactic Civilizations II: Dread Lords)
- Aschen (Stargate SG-1)
- Asgard (Stargate SG-1)
- Asurans (Stargate Atlantis)
- Atevi (C. J. Cherryh's Foreigner series)
- Aurelians (Advent Rising)
- Autobot (Transformers)
- Auronar (Blake's 7)
- Autons (Doctor Who)
- Axanars (Star Trek)
- Axons (Doctor Who)
- Azgonians (Perry Rhodan)
- Aziam (Battlelords of the 23rd Century)
- Baalols (Perry Rhodan)
- Babel fish (The Hitchhiker's Guide to the Galaxy)
- Badoon (Marvel Comics)
- Bailies (Cleopatra 2525) machine race that conquered Earth
- Bajorans (Star Trek)
- Ba'kus (Star Trek)
- Baliflids (Ascendancy)
- Ballchinnian (Men in Black II)
- Balmarians (Super Robot Wars)
- Bandersnatchi (Larry Niven's Known Space) (Slaver's meat animal)
- Bandi (Star Trek)
- Banik (Farscape)
- Banthas (Star Wars)
- Barkonides (Perry Rhodan)
- Barzans (Star Trek)
- Beings of the Extra Terrestrial origin which is Adversary of human race (Muv-Luv)
- Benjari (Battlelords of the 23rd Century)
- Benzites (Star Trek)
- Berellians (Star Trek)
- Berserkers (Fred Saberhagen's Berserker series)
- Berubelans (Anachronox)
- Betazoid (Star Trek)
- Bgztlans (DC Comics' Legion of Super-Heroes)
- Bionicles
- Bioroids (Intense Stories)
- Bith (Star Wars)
- Bjorn (Space Quest)
- Black Arms (Shadow the Hedgehog)
- Black Cloud (Fred Hoyle (interstellar dust cloud))
- Black Oil (The X-Files)
- Blastaar (native of the Negative Zone (Marvel Comics))
- Bolians (Star Trek)
- Boolite (Farscape)
- Borg (Star Trek)
- Bothans (Star Wars)
- Braalians (DC Comics' Legion of Super-Heroes)
- Bradicor (Schlock Mercenary)
- Brains (Win, Lose and Kaboom)
- Breen (Star Trek)
- Briori (Star Trek)
- Brood (Marvel Comics)
- Brunnen G (LEXX)
- Brunali (Star Trek)
- Brutes (Jiralhanae) (Halo)
- Budong (Farscape)
- Bugs from Klendathu (Starship Troopers)
- Bulrathi (Master of Orion)
- Buggers (See Formics)
- Bynars (Star Trek)
- Calamarain (Star Trek)
- Caleban (Frank Herbert's Whipping Star) invisible telepathic beings who are actually the minds of stars
- Calcinites (X-COM: Terror from the Deep)
- Caliban (C. J. Cherryh's Alliance-Union universe)
- Capelons (Ascendancy)
- Caponians (Zak McKracken and the Alien Mindbenders)
- Cardassians (Star Trek)
- Carggites (DC Comics' Legion of Super-Heroes)
- Cathar (Star Wars)
- Cat People (Marvel Comics)
- Catalytes (Utopia)
- Catteni (Anne McCaffrey's Catteni Series)
- Cavaliers (Tommy & PJ)
- Celareon (Conquest: Frontier Wars)
- Celatids (X-COM: UFO Defense)
- Celestials (Marvel Comics)
- Centauri (Babylon 5)
- Centrans (Christopher Anvil's Pandora's Planet stories)
- Ceti eels (Star Trek II: The Wrath of Khan—bug-like ear parasites from Ceti Alpha V)
- Chaethe (Kathy Tyers's book One Mind's Eye)
- Chalnoths (Star Trek)
- Chamachies (Ascendancy)
- Changelings (Star Trek)
- Chaos (Independence War, aka I-War, and Independence War 2: Edge of Chaos)
- Charrids (Farscape)
- Chatilians (Battlelords of the 23rd Century)
- Cheblons (Imperium Galactica II: Alliances)
- Cheela (Dragon's Egg - inhabitants of neutron star)
- Chelonians (Doctor Who novels)
- Chenjesu (Star Control)
- Chevanno (Utopia)
- Chi (C. J. Cherryh's Chanur novels)
- Chigs (Space: Above and Beyond)
- Chimera (Resistance: Fall of Man, not exactly extraterrestrial but may still be referred to as such.)
- Chimera Sui Generis (Ben 10)
- Chiss (Star Wars)
- Chmmr (Star Control)
- Cho-choi (Jack McDevitt's Infinity Beach)
- Chozo (Metroid)
- Chronomyst (Ascendancy)
- Chryssalids (X-COM: UFO Defense)
- Cinnrusskin (James White's Sector General series)
- Cirronians (Tracker)
- Cizerack (Battlelords of the 23rd Century)
- Clutch Turtles (Liaden universe)
- Cocytans (The Dig)
- Coeurl (The Voyage of the Space Beagle by A. E. van Vogt)
- Cognocenti (Star Trek)
- Colatas (Farscape)
- Cole (Tracker)
- Colonists (The X-Files)
- Colour out of space (H. P. Lovecraft)
- Coluans (DC Comics' Legion of Super-Heroes)
- Combine (Half-Life 2) - an alien empire; note: many of the "Combine" seen in the game are actually humans that have been assimilated or collaborate as brutal police troopers)
- Coneheads - Native inhabitants of the planet Remulak they are recognized by their distinctive craniums which are roughly conical in shape. (Saturday Night Live)
- Coreeshi (Farscape)
- Corporal Giroro (Sgt. Frog)
- Corvallen (Star Trek)
- Covenant, The (Halo) a theocratic collective of allied species
- Creators (Nexus: The Jupiter Incident)
- Crites (Critters films) carnivorous hairballs
- Crypto (Destroy All Humans!)
- Cryons (Doctor Who)
- Ctarl-Ctarl (Outlaw Star)
- Cybermen (Doctor Who)
- Cybertronians (Transformers)
- Cybyota (Orion's Arm)
- Cylons (Battlestar Galactica)
- Cynoid (Master of Orion III)
- Cyrollan (The Journeyman Project)
- Daemonites (Wildstorm)
- Dakkamites (Marvel Comics)
- Daleks (Doctor Who)
- The Dance (Marvel Comics)
- Darjakr'Ul (Utopia)
- Dark Eldar (Warhammer 40,000)
- Darloks (Master of Orion)
- Darrians (Traveller RPG) known for their small, high-technology polity)
- Darzok (Haegemonia: Legions of Iron)
- Daxamites (DC Comics)
- Decapodian (Futurama)
- Decepticon (Transformers)
- Deep Ones (H. P. Lovecraft)
- Deep Ones (X-COM: Terror from the Deep)
- Delphons (The History of the Galaxy series)
- Deltans (Star Trek)
- Delvians (Farscape)
- Demiurg (Warhammer 40,000)
- Deneans (Farscape)
- Denebians (Star Trek)
- Denobulans (Star Trek)
- Dentics (Farscape)
- Dentrassis (The Hitchhiker's Guide to the Galaxy)
- Deoxys (Pokémon)
- Dessarians (Tracker)
- Detrovite (Ben 10)
- Devaronian (Star Wars)
- Devastators (One Mind's Eye)
- Dilbians (Ursinoid species of The Law-Twister Shorty and other stories by Gordon Dickson)
- Dnyarri (Star Control)
- Dom Kavash (Freelancer)
- Dominators (DC Comics)
- Dominators (Doctor Who)
- DomZ (Beyond Good and Evil)
- the Doublers (two-in-one semi-humanoids of Stanisław Lem's Eden)
- Douwd (Star Trek)
- Draaknaars (Thor series)
- Dracs (Barry B. Longyear's Enemy Mine and The Enemy Papers)
- Draconians (Doctor Who)
- Draenei (World of Warcraft)
- Drahvins (Doctor Who)
- Draic Kin (The Longest Journey, Dreamfall)
- Drak (Farscape)
- Drakh (Babylon 5 & Crusade)
- Drath (Galactic Civilizations: Altarian Prophecy)
- Drayan (Star Trek)
- Dread Lords (Galactic Civilizations II: Dread Lords)
- Drej (Titan A.E.)
- Drengin (Galactic Civilizations)
- Drones or Buggers (Yanme'e) (Halo)
- Druuge (Star Control)
- Dugs (Star Wars)
- Duos from Uranus (Space Patrol (1962))
- Dubtaks (Ascendancy)
- Durlans (DC Comics' Legion of Super-Heroes)
- Duros (Star Wars)
- Dyson Aliens (Peter F. Hamilton's "Pandora's Star")
- Ectonurite (Ben 10)
- Edo (Star Trek)
- Ego the Living Planet (Marvel Comics)
- Ekhonides (Perry Rhodan)
- El-Aurians (Star Trek)
- Eldar (Warhammer 40,000)
- Elder Gods (Cthulhu Mythos)
- Elder Things (Cthulhu Mythos)
- Eldorians (Utopia)
- Elerians (Master of Orion II)
- Elites (Sangheili) (Halo)
- Elitians
- Engineers (Huragok) (Halo)
- Eoladi (Master of Orion III)
- Energy Rider (Farscape)
- Ep-Hogers (Perry Rhodan)
- Eridani (Battlelords of the 23rd Century)
- Esmers (Little Big Adventure 2, they are divided into four races: Sups, Francos, Wannies and Mosquibees)
- E.T (Extra Terrestrial being in the movie E.T. The Extra-Terrestrial)
- Ethereals (X-COM: UFO Defense)
- Exobot (Star Trek)
- Evon (Master of Orion III)
- Ewoks (Star Wars)
- The Face of Boe (Doctor Who)
- Face Dancers (Dune universe)
- Falleen (Star Wars)
- Fek'Ihri (Star Trek)
- The Fendahl (Doctor Who)
- Ferengi (Star Trek)
- Ferronans (Perry Rhodan)
- Festival (Singularity Sky by Charles Stross)
- Fithp (Larry Niven's Footfall) "Baby Elephants"
- Flatcats (Robert A. Heinlein's The Rolling Stones, compare Tribble)
- Fleeblebroxians (Chip 'n' Dale's Rescue Rangers) Partially-telekinetic shape-shifters
- Floaters (X-COM: UFO Defense)
- Flood (Halo)
- Florauna (Ben 10)
- Fludentri (Ascendancy)
- Foamasi (Doctor Who)
- Foralbo (Utopia)
- Ford Prefect (The Hitch Hikers Guide To the Galaxy)
- Forerunners (Halo)
- Forerunners (The History of the Galaxy series)
- The Forest of Cheem (Doctor Who)
- Formics (Ender Wiggins cycle by Orson Scott Card)
- Fotiallian (Star Trek)
- Fott (Battlelords of the 23rd Century)
- Freeza(Dragonball Z)
- Frutmaka (Ascendancy)
- F'sherl-Ganni (Schlock Mercenary, also called 'Gatekeepers')
- Furbls (Battlelords of the 23rd Century)
- Furlings (Stargate SG-1 -- one of the Four Great Races)
- Furons (Destroy All Humans!)
- Futars (Dune universe)
- Gadmeer (Stargate SG-1)
- Gaim (Babylon 5)
- Galactus (Marvel Comics) Planet-devouring force of nature
- Galaxoid (Calvin and Hobbes by Bill Watterson)
- Galvan (Ben 10)
- Galvanic Mechomorph (Ben 10)
- Gamorrean (Star Wars)
- Gand (Star Wars)
- Gaols (Titan A.E.)
- Garthlings (David Brin's Uplift Universe)
- The Gelth (Doctor Who)
- Gemini (Battlelords of the 23rd Century)
- Geonosian (Star Wars)
- Gethenians (Ursula K. Le Guin's Ekumen stories) and other races
- Ghamans (Perry Rhodan)
- Ghosts (Nexus: The Jupiter Incident)
- Gigan (Godzilla films)
- Gill Men (X-COM: Terror from the Deep)
- G'keks (David Brin's Uplift Universe)
- Gladifers (Dennis Paul Himes)
- Gloarft (Megas XLR)
- Gnolams (Master of Orion II)
- Gnosis (Xenosaga)
- Goa'uld (Stargate SG-1)
- Godan (Imperium Galactica II: Alliances)
- Gonzo (The Muppets)
- Goola-Goola (Battlelords of the 23rd Century)
- Gorlocks (Win, Lose and Kaboom)
- Gorg (Nexus: The Jupiter Incident)
- Gorn (Star Trek)
- Goszuls (Perry Rhodan)
- Gourmand (Ben 10)
- Govorom (Ascendancy)
- Gowachin (Frank Herbert's ConSentiency stories)
- Grans (Star Wars)
- The Graske (Doctor Who)
- Great Race of Yith (H. P. Lovecraft)
- Grendarl (Master of Orion III)
- Grogs (Larry Niven's Known Space)
- Grudeks (Farscape)
- G.R.A.I.S.E. (Melonpool)
- Greys (popular mythology)
- Grunds (Marvel Comics)
- Grunts (Unggoy) (Halo)
- Guardians of the Universe (DC Comics) natives of the planet Oa, creators and administrators of the Green Lantern Corps
- Gubru (David Brin's Uplift Universe)
- Gungans (Star Wars)
- Haggunenons (The Hitchhiker's Guide to the Galaxy)
- Halflings (Dances in the Snow, Genome)
- Hallessi (Harry Turtledove's Worldwar book series, a subject species of the Race)
- Hallucinoids (X-COM: Terror from the Deep)
- Halosians (Farscape)
- Hangi (Farscape)
- Hani (C. J. Cherryh's Chanur novels)
- Hanshaks (Ascendancy)
- Harammins (The History of the Galaxy series)
- Haydonites (Robotech)
- Headcrabs (Half-Life)
- Headies (Noon Universe)
- Heechee (Frederik Pohl)
- Hirogen (Star Trek)
- Hisa (C. J. Cherryh's Alliance-Union universe)
- Hivers (Sword of the Stars)
- Hivers (Traveller RPG (modified starfish))
- Hoka (Poul Anderson and Gordon R. Dickson teddy--bears imitating human history)
- Hooloovoo (The Hitchhiker's Guide to the Galaxy)
- Hoon (David Brin's Uplift Universe)
- Horda (Doctor Who)
- Hork-Bajir (K. A. Applegate's Animorphs)
- Horta (Star Trek)
- Howard the Duck (Marvel Comics)
- Hross (C. S. Lewis' Ransom Trilogy)
- Hunters (Lekgolo) (Halo)
- Hunters (Star Trek)
- Hur'q (Star Trek)
- Hutts (Star Wars)
- Husnock (Star Trek)
- Hydrans (Star Trek)
- Hykraius (DC Comics' Legion of Super-Heroes)
- Hynerians (Farscape)
- Iberons (Imperium Galactica II: Alliances)
- Ibs (Robert J. Sawyer's Starplex)
- Ice Warriors (Doctor Who)
- Iconians (Galactic Civilizations II: Dread Lords)
- Iconians (Star Trek)
- Iduve (C. J. Cherryh's Alliance-Union universe)
- Ikrini (Battlelords of the 23rd Century)
- Ilanics (Farscape)
- Ilwrath (Star Control)
- Imsaeis (Master of Orion)
- Imskians (DC Comics' Legion of Super-Heroes)
- Ing (Dark enemies of the Luminoth in Metroid Prime 2:Echoes)
- Insects (The History of the Galaxy series)
- Interions (Farscape)
- Invid/Inbit (Flower of Life hunting conquerors of Earth from Robotech: The New Generation and their counterparts from Genesis Climber Mospeada)
- Irkens (Invader Zim)
- Isanians (Perry Rhodan)
- Ishtarians (Poul Anderson's Fire Time)
- Ithanites (Star Trek)
- Ithkul (Master of Orion III)
- Ixtl (The Voyage of the Space Beagle by A. E. van Vogt)
- Jackals (Kig-Yar) (Halo)
- Jaffa (Stargate SG-1)
- Jaridians (Earth: Final Conflict)
- Jawa (Star Wars)
- Jem'Hadar (Star Trek)
- Jenova (Final Fantasy 7)
- Jezzedaic Priests (Battlelords of the 23rd Century)
- Jjaro (Marathon Trilogy)
- J'naii (Star Trek)
- Jocaceans (Farscape)
- Jotoki (Larry Niven's Known Space)
- Joozian (South Park)
- Kadi (Star Trek)
- Kafers (2300AD)
- Kaleds (Doctor Who)
- Kalish (Farscape)
- Kal-Kriken (Utopia)
- Kalliran (C. J. Cherryh's Alliance-Union universe)
- Kambuchka (Ascendancy)
- Kanamite (The Twilight Zone, episode To Serve Man)
- Kang and Kodos (The Simpsons)
- Karemma (Star Trek)
- Kariak (Haegemonia: Legions of Iron)
- Kazon (Star Trek)
- Kdatlyno (Larry Niven's Known Space)
- Kerons (Sgt. Frog)
- Key-Guardians (Utopia)
- King Ghidorah
- Kineceleran (Ben 10)
- Kharaa (Natural Selection)
- Kherubim (Wildstorm)
- Khunds (DC Comics)
- Khurtarnan (Farscape)
- Kif (C. J. Cherryh's Chanur novels)
- Kilaaks (Destroy All Monsters)
- Kilrathi (Wing Commander games)
- Kizanti (Battlelords of the 23rd Century)
- Kimera (Earth: Final Conflict)
- Kivar (Roswell)
- Klaestron (Star Trek)
- Klackons (Master of Orion)
- Klingons (Star Trek)
- Knnn (C. J. Cherryh's Chanur novels)
- Koozbanians (The Muppet Show)
- Korath (Galactic Civilizations II: Dark Avatar)
- Korbinites (Marvel Comics)
- Korx (Galactic Civilizations: Altarian Prophecy)
- K-PAXians (K-PAX)
- Kra'hen (Imperium Galactica II: Alliances)
- Krakeds (Battlelords of the 23rd Century)
- Kree (Marvel Comics)
- Kreel (Star Trek)
- Kreely (Schlock Mercenary)
- Kreetassan (Star Trek)
- Krenim (Star Trek)
- Kriken (Metroid Prime Hunters)
- Krith (Richard C Merediths 'Timeliner Trilogy')
- Kromaggs (Sliders)
- Kroot (Warhammer 40,000)
- Krynn (Galactic Civilizations II: Dark Avatar)
- Krynn (The Journeyman Project 2: Buried in Time)
- Krynoids (Doctor Who)
- Kryptonians (Superman)
- Kssthrata (Schlock Mercenary)
- Ktarian (Star Trek)
- Kymellians (Horse head w/ humanoid body; Marvel Comics)
- Kymnar (FTL:2448 RPG)
- Kyo (C. J. Cherryh's Foreigner series)
- Kyulek (O.R.B: Off-World Resource Base)
- Kzinti (Larry Niven's Known Space series and Star Trek: The Animated Series)
- Lallorans (DC Comics' Legion of Super-Heroes)
- Lance Corporal Dororo (Sgt. Frog)
- Laxidasians (Marvel Comics)
- Lectroids (The Adventures of Buckaroo Banzai Across the Eighth Dimension)
- Leerans (K. A. Applegate's Animorphs)
- Leoniders (Noon Universe)
- Lepidopterran (Ben 10)
- Leviathan (Farscape)
- Liir (Sword of the Stars)
- Limax (Ben 10)
- Lipul (Star Trek)
- Lithians (James Blish's A Case of Conscience)
- Livrai (Joe Haldeman's Mindbridge) Hostile aliens
- Loboan (Ben 10)
- Lobster Men (X-COM: Terror from the Deep)
- Locust (Gears of War)
- Logrians (The History of the Galaxy series)
- Lohvo (Sluggy Freelance)
- Lombaxes (Ratchet & Clank)
- Loomi (Space Patrol) creatures inhabiting Jupiter with heat-retaining skins
- Lucratians (Utopia)
- Luminoth (Metroid Prime 2: Echoes)
- Lunarians (Final Fantasy IV)
- Lurian (Star Trek)
- Lurmans (Doctor Who)
- Luxans (Farscape)
- Ly-Cilph (The Night's Dawn Trilogy)
- Lycocians (Star Trek)
- Lyrans (Star Fleet Universe)
- M-113 Creature (Star Trek)
- Macra (Doctor Who)
- Magog (Andromeda)
- Mahendo'sat (C. J. Cherryh's Chanur novels)
- Maians (Perfect Dark)
- Majat (C. J. Cherryh's Alliance-Union universe)
- Malons (Star Trek)
- Mangalores (The Fifth Element)
- Mantis (Conquest: Frontier Wars)
- Marklars (South Park)
- Marmosians (Ascendancy)
- Martians
- H. G. Wells' The War of the Worlds
- Edgar Rice Burroughs's Barsoom series
- Marvin the Martian from Looney Tunes and Duck Dodgers.
- Premendra Mitra's Mangalbairi (The Martian Enemies)
- Ray Bradbury's The Martian Chronicles
- Aelita (1924 movie)
- Mars Attacks! (Topps trading cards and Tim Burton movie)
- Quatermass and the Pit (BBC science-fiction television serial)
- Larry Niven's Known Space
- ... and many others
- Martian Manhunter (DC Comics)
- Masters (The Tripods)
- Mazians (Battlelords of the 23rd Century)
- Mebes (Ascendancy)
- Medusans (Star Trek)
- Meehooks (Fusion comic book series, "dinosaurs with fur")
- Meklars (Master of Orion)
- Melmacians (ALF)
- Melnorme (Star Control)
- Melotians (Melonpool)
- Menoptra (Doctor Who)
- Mentors (Doctor Who)
- Merseians (Technic History by Poul Anderson)
- Mesklinites (Hal Clement's Mission of Gravity (millipede-like))
- Methorians (Barrington J. Bayley's Zen Gun) gaseous giant-giant dwellers)
- Metroid (Metroid series)
- Metrons (Star Trek)
- Microman
- Minbari (Babylon 5)
- Minions (Ascendancy)
- Minosians (Star Trek)
- Mintakans (Star Trek)
- Miradorn (Star Trek)
- Misha (Battlelords of the 23rd Century)
- Mmrnmhrm (Star Control)
- Mon Calamari (Star Wars)
- Mondoshawan (The Fifth Element)
- Monoids (Doctor Who)
- The Mooninites (Aqua Teen Hunger Force) (individually: Igninokt and Err)
- Mork (Mork and Mindy)
- Morlocks
- Moroks (Doctor Who)
- Mor-Taxans (War of the Worlds first season)
- Morthren (War of the Worlds second season)
- Movellans (Doctor Who)
- Moxx of Balhoon (Doctor Who)
- Mri (C. J. Cherryh's Faded Sun trilogy)
- Mr. Saturn (EarthBound)
- Mrrshan (Master of Orion)
- Mudokons (Oddworld series)
- Mutons (X-COM: UFO Defense)
- Mutzachans (Battlelords of the 23rd Century)
- Muuh (Orion's Arm)
- Mycon (Star Control)
- Naglon (Doctor Who)
- Nairnama (Independence War, aka I-War)
- Namekian (Dragon Ball)
- Narn (Babylon 5)
- Nausicaans (Star Trek)
- Neadlehead (Win, Lose and Kaboom)
- Nebari (Farscape)
- Nebular (Calvin and Hobbes by Bill Watterson)
- Necrons (Warhammer 40,000)
- Nemet (C. J. Cherryh's Alliance-Union universe)
- Neutrals (Futurama)
- New Gods (From the planets Apokolips and New Genesis, from The Fourth World in DC Comics)
- New Orions (Master of Orion III)
- Nicassar (Warhammer 40,000)
- Niea (Niea 7)
- Nietzscheans (Andromeda)
- Nihilanth (Half-Life)
- Nimbuloids (Ascendancy)
- N'Kull (Advent Rising)
- Nitros Oxide ([[Crash Bandicoot series]])
- Nodulians (Tracker)
- Nomads (Freelancer)
- Nomes (Terry Pratchett's The Bromeliad)
- Nommo (Master of Orion)
- Nox (Stargate SG-1)
- Nyronds (passim in the works of Zander Nyrond; occasionally in those of his "brother" Soren)
- Oankali (Octavia Butler's Xenogenesis series)
- Ob'enn (Schlock Mercenary)
- Ocampa (Star Trek)
- Oculons (Ascendancy)
- Ogri (Doctor Who)
- Ogrons (Doctor Who)
- Old Ones (Warhammer 40,000)
- Omicronians / Popplers (Futurama)
- Optera (Doctor Who)
- Orandoans (DC Comics' Legion of Super-Heroes)
- Orfa (Ascendancy)
- Organians (Star Trek)
- Ori (Stargate SG-1)
- Orion (Star Trek)
- Orion Rogues (Battlelords of the 23rd Century)
- Orions (Master of Orion)
- Orkans (Mork and Mindy)
- Orks (Warhammer 40,000)
- Orsians (Tracker)
- Ortheans (Mary Gentle's Golden Witchbreed) androgynous until puberty
- Orz (Star Control)
- Outsiders (Larry Niven's Known Space)
- Overlords (Childhood's End by Arthur C. Clarke)
- Paan'uri (Schlock Mercenary) the Dark Matter Entities from
- Pah Wraith (Star Trek)
- Pak, a.k.a. Protectors (Larry Niven's Known Space books) the superintelligent adult form of homo habilis; human Protectors are even more intelligent
- Pakled (Star Trek)
- Parillatians (Utopia)
- Pascalenes (Utopia)
- Pascians (Battlelords of the 23rd Century)
- Peliar Zel (Star Trek)
- Pemalites (K. A. Applegate's Animorphs)
- Pequeninos (Orson Scott Card's Speaker for the Dead)
- Petrosapien (Ben 10)
- Pfifltrig (C. S. Lewis' Ransom Trilogy)
- Pfhor (Marathon Trilogy)
- Phagors (Brian W. Aldiss's Heliconia series)
- Phalanx (Marvel Comics)
- Phentari (Battlelords of the 23rd Century)
- Phibians (Dune universe)
- Phleebhutinskis (Space Quest)
- Phtagurs (Metabarons)
- Pierson's Puppeteers (Larry Niven's Ringworld and Known Space series (three legs, two manipulative heads))
- Pilots (Farscape)
- Pinkunz (Space Quest)
- Pisciss Volanns (Ben 10)
- Pkunk (Star Control)
- Posleen (John Ringo's "Legacy of the Aldenata")
- Pr?*tans (The High Crusade)
- "Predator" aliens (Predator movie series)
- Primes (Peter F. Hamilton's "Commonwealth Saga")
- Private Tamama (Sgt. Frog)
- Progenitors (David Brin's Uplift Universe)
- Prophets (San 'Shyuum) (Halo)
- Prophets (Star Trek)
- Protoss (StarCraft)
- Psilons (Master of Orion)
- Psychlos (Battlefield Earth)
- Psychons (Space: 1999)
- Prot (Gene Brewer's K-PAX)
- Protoculture (Macross series (advanced race who engineered humans and Zentradi))
- Polionation Tech (Sims 2)
- The Puppet Masters (Robert A. Heinlein book of the same name)
- Purple Aliens (It's Walky!; according to their leader, 'Alien' is the name of their homeworld in their own language)
- Pyronite (Ben 10)
- Python Lizards (Battlelords of the 23rd Century)
- Q (Star Trek)
- Quarks (Doctor Who)
- Quarren, a.k.a. "Squid Heads" (Star Wars)
- Quintaglio (Robert J. Sawyer)
- Quintesson (Transformers)
- Qou'thalas (The Journeyman Project 3: Legacy of Time)
- Qwardians (DC Comics)
- Raas (Master of Orion III)
- Rabotevs (Harry Turtledove's Worldwar book series, a subject species of the Race)
- Race, The (Moreau Series) Amoeboid aliens that attempt to hide on an Earth where genetic engineering has been rampant)
- The Race (Harry Turtledove's Worldwar book series, a reptilian species that had conquered two planets and attacked "Tosev 3" (Earth) in 1942)
- Rako-Gorda (Utopia)
- Ram Pythons (Battlelords of the 23rd Century)
- Rancors (Star Wars)
- Raptors (Nexus: The Jupiter Incident)
- Reapers (Doctor Who)
- Reapers (X-COM: UFO Defense)
- Regul (C. J. Cherryh's Alliance-Union universe)
- Relgarians (Farscape)
- Remans (Star Trek)
- Replicators (Stargate SG-1)
- Reptoids (UFO aliens)
- Re'tu (Stargate SG-1)
- Rigellians (Simpsons) (The Simpsons) (including Kang and Kodos)
- Rigellians (Lensman books) which are barrel-shaped with four tentacular arms and four stubby legs)
- Riim (The Voyage of the Space Beagle by A. E. van Vogt)
- Rills (Doctor Who)
- Rimerunner (Expedition)
- Risa (Star Trek)
- Robotech Masters (Robotech)
- Rodians (Star Wars)
- Roger the Alien(American Dad)
- Romulans (Star Trek)
- Rull (The War against the Rull by A. E. van Vogt)
- Rutans (Doctor Who)
- Ryqril (Timothy Zahn's The Blackcollar)
- Saiyan (Dragon Ball Z)
- Sakkra (Master of Orion)
- Sal-Kadeem (Utopia)
- Sandworm (Dune)
- Sariens (Space Quest)
- Sarturians (Utopia)
- Sau-Bau (Battlelords of the 23rd Century)
- Scarrans (Farscape)
- Schniarfeurs (Valérian and Laureline)
- Scorvians (Farscape)
- Scrin (Command & Conquer)
- Sebaceans (Farscape)
- Second through Last Men (Olaf Stapledon's Last and First Men)
- Sectoids (X-COM: UFO Defense)
- Selay (Star Trek)
- Sergeant Keroro (Sgt. Frog)
- Sergeant Major Kururu (Sgt. Frog)
- Shadows (Babylon 5)
- Sharrh (C. J. Cherryh's Alliance-Union universe)
- Sheeda (Grant Morrison's Seven soldiers of Victory megaseries)
- Sheliak (Star Trek)
- Shevar (Ascendancy)
- Sheyangs (Farscape)
- Shi'ar (Marvel Comics)
- Shinari (Imperium Galactica II: Alliances)
- Shingouz (Valérian comics)
- Shivans (Descent: FreeSpace)
- Shoggoths (H. P. Lovecraft)
- Shofixti (Star Control)
- Shonunin (C. J. Cherryh's Alliance-Union universe)
- Shroobs (Mario & Luigi: Partners in Time)
- Silacoids (X-COM: UFO Defense)
- Silicoids (Master of Orion)
- Silver Surfer (Marvel Comics)
- Skaarj (Unreal (series))
- Skedar (Perfect Dark)
- Skinnies (Starship Troopers)
- Skolarians (Zak McKracken and the Alien Mindbenders)
- Skrulls (Marvel Comics)
- Slavers (see also Thrint)
- Slitheen (Doctor Who)
- Sludge (Ben 10)
- Slylandro (Star Control)
- Snakemen (X-COM: UFO Defense)
- Snarks (Marvel Comics)
- Snovemdomas (Ascendancy)
- Solaris (Stanisław Lem's Solaris)
- Solomon Family (3rd Rock from the Sun)
- Solon (Haegemonia: Legions of Iron)
- Son'a (Star Trek)
- Sontarans (Doctor Who)
- Soomanii (Utopia)
- Sorn (C. S. Lewis' Ransom Trilogy)
- Soro (David Brin's Uplift Universe)
- Sosiqui (The Journeyman Project 3: Legacy of Time)
- Space Pirates (Metroid series)
- Spathi (Star Control)
- Species 8472 (Star Trek)
- Spiridons (Doctor Who)
- S'pht (Marathon Trilogy)
- Spock (Star Trek)
- Spoo (Babylon 5)
- Squiz-Quijy (Utopia)
- Strogg (Quake II) and (Quake 4)
- Stsho (C. J. Cherryh's Chanur novels)
- Suliban (Star Trek)
- Superman (Superman I-IV & Superman Returns)
- Supox (Star Control)
- Swaparamans (Ascendancy)
- Sycorax (Doctor Who)
- Sye-Men (Battlelords of the 23rd Century)
- Sykarians (Farscape)
- Syreen (Star Control)
- Taelons (Gene Roddenberry's Earth: Final Conflict)
- Tachidi (Master of Orion III)
- Tagorians (Noon Universe)
- Tai (Genome)
- Tak Tak (Star Trek)
- Talan (Outcast)
- Talarians (Star Trek)
- Talaxians (Star Trek)
- Tallerians (Warhammer 40,000)
- Talokians (DC Comics' Legion of Super-Heroes)
- Talosians (Star Trek)
- Tamarians (Star Trek)
- Tandarans (Star Trek)
- Tandu (David Brin's Uplift Universe)
- Tanndai Techknights (Battlelords of the 23rd Century)
- Tarellians (Star Trek)
- Tarentateks (Star Wars)
- Tarkans (Farscape)
- Tarkas (Sword of the Stars)
- Tasoth (X-COM: Terror from the Deep)
- Tau (Warhammer 40,000)
- Tavleks (Farscape)
- Taxxons (K. A. Applegate's Animorphs)
- Tc'a (C. J. Cherryh's Chanur novels)
- Technarchy (Marvel Comics)
- Tecreseans (Battlelords of the 23rd Century)
- Tellarites (Star Trek)
- Temarkians (Utopia)
- Tenctonese (Alien Nation)
- Tenebrians (Hal Clement's Close to Critical)
- Tentaculats (X-COM: Terror from the Deep)
- Terellian (Star Trek)
- Terileptils (Doctor Who)
- Terran (Final Fantasy IX)
- Terra Novans (Star Trek)
- Terrelian (Star Trek)
- Terrellian (Star Trek)
- Terrians (Earth 2)
- Tetramand (Ben 10)
- Tetraps (Doctor Who)
- Thals (Doctor Who)
- Thalan (Galactic Civilizations II: Dread Lords)
- Thanagarians (DC Comics)
- Thargoids (Elite (computer game))
- Thasian (Star Trek)
- Therbian (See Aaamazzarite)
- Therons (Dan Dare stories)
- Tholians (Star Trek)
- Thraddash (Star Control)
- Thranx (Alan Dean Foster's Humanx Commonwealth series)
- Thrint (Larry Niven's Known Space)
- Tiberians (Buzz Aldrin and John Barnes' Encounter With Tiber)
- Tilikanthua (Utopia)
- Time Lords of Gallifrey (Doctor Who)
- Titanians (DC Comics' Legion of Super-Heroes)
- Titanides (John Varley's Gaea-trilogy)
- T'Lani (Star Trek)
- the Tleilaxu (Frank Herbert's Dune novels)
- Tnuctip (Larry Niven's Known Space) (engineered the revolt against the Thrint)
- Tok'ra (Stargate SG-1)
- Tollan (Stargate SG-1)
- Toluen (Imperium Galactica II: Alliances)
- Torians (Galactic Civilizations)
- Trabe (Star Trek)
- Tractators (Doctor Who)
- Traeki (David Brin's Uplift Universe)
- Tralfamadorians (Kurt Vonnegut (The Sirens of Titan, Slaughterhouse 5))
- Tran (Alan Dean Foster's Icerigger)
- Transformers
- Trandoshans (Star Wars)
- Traskans (Farscape)
- Treecats (David Weber's Honorverse)
- Treens (Dan Dare stories)
- Tribbles (Star Trek; compare the earlier flatcats from Robert A. Heinlein's The Rolling Stones)
- Triceraton (Teenage Mutant Ninja Turtles)
- Triscenes (X-COM: Terror from the Deep)
- Trilarians (Master of Orion II)
- Trills (Star Trek)
- Trillions (Nicholas Fisk) small collective crystals
- Trinocs (Larry Niven's Known Space)
- Tromites (DC Comics' Legion of Super-Heroes)
- Tsufurujin (Dragon Ball)
- Tsung (Valérian and Laureline)
- Tusken Raiders (Star Wars)
- Twi'leks (Star Wars)
- Twinsunians (Little Big Adventure, they are divided into four races: Quetches, Rabbibunnies, Grobos and Spheros)
- Tyranids (Warhammer 40,000)
- Tzenkethi (Star Trek)
- Umgah (Star Control)
- Unas (Stargate SG-1)
- Uncreated (Marvel Comics)
- Ungooma (Ascendancy)
- Uniocs (Schlock Mercenary)
- Unity (Superman: The Animated Series)
- Ur-Quan Kzer-Za (Star Control)
- Ur-Quan Kohr-Ah (Star Control)
- Uryuoms (El Goonish Shive)
- U'tani (Star Trek)
- Utrom (Teenage Mutant Ninja Turtles)
- Utwig (Star Control)
- Vaadwaur (Star Trek)
- Vademon (Digimon)
- Vanacancia (Utopia)
- Varga plants (Doctor Who)
- Vardians (Tracker)
- Vardrag (Nexus: The Jupiter Incident)
- Vasudans (Descent: FreeSpace)
- Vegetaliens (Tommy and PJ)
- Velantians (Lensman books) notable for their multiplicity of eyes and various appendages
- Venek (Farscape)
- Venom and Carnage (Marvel Comics)
- Venom grubs (Doctor Who)
- Vervoids (Doctor Who)
- Vespids (Warhammer 40,000)
- Vhorwed (Schlock Mercenary)
- Vidiians (Star Trek)
- Vilani (Traveller RPG) known for their bureaucratic tendencies and empire building
- Viltrumites (Invincible)
- Vineans (Yoko Tsuno (blue skin) comic)
- Visitors (V)
- Vogons (The Hitchhiker's Guide to the Galaxy) (bad poetry and bureaucratic planetary demolitions a speciality)
- Vok (Beast Wars)
- Vorc (Farscape)
- Vorcarian bloodtracker (Farscape)
- Vorlons (Babylon 5)
- Vorta (Star Trek)
- Vortex life forms (Ecco the Dolphin)
- Vorticon (Commander Keen)
- Vortigaunt (Half-Life)
- Vortisaurs (Doctor Who audio dramas)
- Voth (Star Trek)
- Vroarscans (Utopia)
- Vulcans (Star Trek)
- Vulpimancer (Ben 10)
- VUX (Star Control)
- Wadi (Star Trek)
- Waldahudin (Robert J. Sawyer's Starplex)
- Wanderers (Noon Universe)
- Wang's Carpets (Greg Egan's Diaspora)
- The Watcher (Marvel Comics)
- Waterseekers (Red Planet)
- Whrloo (Larry Niven's Known Space)
- Willis the Bouncer (Red Planet)
- Winathians (DC Comics' Legion of Super-Heroes)
- Wirrn (Doctor Who)
- Wolfweeds (Doctor Who)
- Wogneer (Star Trek)
- Wookiees (Star Wars)
- Wraith, The (Stargate Atlantis)
- W'rkncacnter (Marathon Trilogy)
- Xandarians (Marvel Comics)
- Xanthuans (DC Comics' Legion of Super-Heroes)
- Xarians (Battlelords of the 23rd Century)
- Xarquids (X-COM: Terror from the Deep)
- Xel'Naga (StarCraft)
- Xenomorphs (the Alien movies)
- Xilians (Invasion of Astro-Monster and Godzilla: Final Wars)
- Xindi (Star Trek)
- X-Nauts (Paper Mario: The Thousand-Year Door)
- Xorda (Archie Comics' Sonic the Hedgehog comics)
- X Parasites (Metroid Fusion)
- Xyrillian (Star Trek)
- Yag-Kosha (Robert E. Howard's The Tower of the Elephant) humanoid elephant
- Yautja (SeePredator)
- Yeerks (K. A. Applegate's Animorphs) (parasitic)
- Yehat (Star Control)
- Yeti (Doctor Who)
- Yilane (West of Eden series of Harry Harrison)
- Yip-Yips (Sesame Street)
- Yoda (Star Wars)
- Yolkians (Jimmy Neutron)
- Yomingans (Schlock Mercenary)
- Yor (Galactic Civilizations)
- Yridian (Star Trek)
- Yugopotamians (The Fairly Oddparents)
- Yuki Nagato (The Melancholy of Haruhi Suzumiya)
- Yuuzhan Vong (Star Wars)
- Zabrak (Star Wars)
- Zakdorns (Star Trek)
- Zaldans (Star Trek)
- Zalkonians (Star Trek)
- Zaphod Beeblebrox (The Hitch Hikers Guide To the Galaxy)
- Zarbi (Doctor Who)
- Zenetan (Farscape)
- Zenn-Lavians (Marvel Comics)
- Zen Rigeln (Battlelords of the 23rd Century)
- Zentradi (Macross), adapted as the Zentraedi in Robotech
- Zen-Whoberis (Marvel Comics)
- Zerg (StarCraft)
- Zhodani (Traveller RPG) - renowned psychics
- Zim (Invader Zim)
- Zinoboppians (Melonpool)
- Zoq-Fot-Pik (Star Control)
- Zorgons (Sluggy Freelance)
- Zygons (Doctor Who)
- John Carpenter's The Thing
- Arthur C. Clarke's 2001: A Space Odyssey (unseen designers of the Monoliths)
- Hal Clement's Needle and Through the Eye of a Needle
- Fritz Leiber's The Wanderer
- Stanisław Lem's The Invincible
- John Lymington's Night of the Big Heat
- Satyajit Ray's The Alien
- Satyajit Ray's Banku Babu's Friend
- Jagadananda Roy's Shukra Bhraman (Travels to Jupiter)
- Steven Spielberg's E.T.
- Steven Spielberg's Taken
- The Adventures of Jimmy Neutron: Boy Genius
- Babylon 5: Thirdspace (telepaths)
- The Body Snatchers (pod people) and its film adaptations
- Cocoon and Cocoon: The Return
- Independence Day
- Super Mario Land and successing games (Tatanga's species)
- ToHeart2 (Lucy Maria Misora/Ruuko)
- War of the Worlds
- Prey
- Signs (film)
- Star Wars
- List of films featuring extraterrestrials
- List of extraterrestrials in fiction by type
- Cat-like aliens
- Races and species in The Hitchhiker's Guide to the Galaxy
- List of Doctor Who monsters and aliens
- Index of fictional species
- List of fictional robots
- List of fictional planets
- List of species in fantasy fiction
- Alien races in the Stargate universe
- Xenobiology
- Cryptozoology
- List of Star Trek races
- Wayne Douglas Barlowe, Ian Summers and Beth Meacham: Barlowe's Guide to Extraterrestrials
- Stanley Schmidt: Aliens and Alien Societies (Writer's Digest)
- Jack Cohen and Ian Stewart: Evolving the Alien: The Science of Extraterrestrial Life
- Cliff Pickover. 2003 The Science of Aliens New York: Basic Books. ISBN 0-465-07315-8