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List of extraterrestrials in fiction

Discussion in 'Sci-Fi and Fantasy Talk' started by Tom, Jul 4, 2009.

  1. Tom

    Tom An Old Friend

    Dec 6, 2004
    Gulf Coast

    The Anti-Monitor DC Comics
    The Alien Satyajit Ray's The Alien and Banku Babu's Friend
    Aziam Battlelords of the 23rd Century
    Azgonians Perry Rhodan
    Azathoth Cthulhu Mythos
    Axons Doctor Who
    Axanars Star Trek
    Autons Doctor Who
    Autobot Transformers
    Auronar Blake's 7
    Aurelians Advent Rising
    Atevi C. J. Cherryh's Foreigner series Humanoid
    Atavus Earth: Final Conflict Humanoid
    Asurans Stargate Atlantis
    Aslan Traveller RPG Feline humanoid
    Asgard Stargate SG-1 Humanoid
    Aschen Stargate SG-1 Humanoid
    Asari Mass Effect
    Arquillians Men in Black
    Arnor Galactic Civilizations II: Dread Lords
    Arkonides Perry Rhodan
    Ark Megaforms Noon Universe
    Arisians and Eddorians E. E. Smith's Lensman novels
    Arilou Lalee'lay Star Control Humanoid - 'Grey' Alien
    Argolin Doctor Who Humanoid
    Arcturians Star Trek
    Arceans Galactic Civilizations
    Arcadians Star Trek
    Arburian Pelarota Ben 10
    Arbryls Ascendancy
    Aras Perry Rhodan
    Arachnoids Serious Sam: The First Encounter Scorpion-like
    Arachnids Battlelords of the 23rd Century
    Aquatoids X-COM: Terror from the Deep
    Aqualish Star Wars
    Anticans Star Trek
    Antedeans Star Trek
    Antarians Imperium Galactica II: Alliances
    Antarans Master of Orion II
    Anodite Ben 10 Alien Force
    Annihilus Marvel Comics native of the Negative Zone
    Angosians Star Trek
    Angol Mois Sgt. Frog
    Androsynth Star Control
    Andromeni Battlelords of the 23rd Century
    Andorians Star Trek Humanoid. Blue skin, white hair, antennae
    Andalites K. A. Applegate's Animorphs Centaur-like, with non-poisonous scorpion tails, and blue fur
    Ancients Farscape
    Ancients Freespace Technologically advaced beings that were wiped out several thousand years ago. Unknown physical description.
    Ancients Stargate SG-1 Humanoid, physically indistinguishable from humans
    Anabis The Voyage of the Space Beagle by A. E. van Vogt
    Amorphs Schlock Mercenary
    Amnioni Stephen Donaldson's The Gap Cycle Humanoid
    Amaut C. J. Cherryh's Alliance-Union universe
    Altarians Galactic Civilizations Humanoid
    Allasomorph Star Trek
    Alkari Master of Orion
    Akritirians Star Trek
    Akaali Star Trek
    Airlia Area 51 novel series by Robert Doherty Humanoid, see moai
    Affront Iain M. Banks' Excession
    Aeodronians Battlelords of the 23rd Century
    Aenar Star Trek Telepathic Humanoid
    Advents (aka Uranus or the Creators) Guyver
    Adipose Doctor Who Humanoid
    Acquarans Farscape Humanoid
    Acamarian Star Trek
    Abyormenites Hal Clement's Cycle of Fire floating balloons
    Abh Crest of the Stars Genetically-enhanced humans
    Aalaag Gordon R. Dickson's Way of the Pilgrim
    Aaamazzarite Star Trek


    Name ↓ Source ↓ Type ↓
    Baalols Perry Rhodan
    Babel fish The Hitchhiker's Guide to the Galaxy A small yellow leech-like fish that telepathically translates all languages into one the wearer knows after inserting it in their ear. Universal Translator.
    Badoon Marvel Comics
    Bailies Cleopatra 2525 machine race that conquered Earth
    Bajorans Star Trek Humanoid
    Ba'kus Star Trek
    Baliflids Ascendancy
    Ballchinnian Men in Black II
    Balmarians Super Robot Wars
    Bandersnatchi Larry Niven's Known Space Artificially engineered single-celled gastropod, twice the size of a brontosaurus. Slaver's meat animal, sentient. Agree to be hunted for sport in exchange for currency to purchase mechanical arms. Asexual reproduction, impervious to genetic degradation or mutation.
    Bandi Star Trek Humanoid
    Banik Farscape Humanoid
    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 Humanoid
    Bgztlans DC Comics' Legion of Super-Heroes
    Bionicles Bionicle
    Bioroids Intense Stories
    Bith Star Wars
    Bjorn Space Quest
    Black Arms Shadow the Hedgehog Humanoid
    Black Cloud Fred Hoyle interstellar dust cloud
    Black Oil The X-Files
    Blastaar Marvel Comics native of the Negative Zone
    Blisk Destroy All Humans! 2
    Bolians Star Trek Humanoid
    Boolite Farscape Humanoid
    Borg Star Trek A race of cybernetically enhanced life forms from the Delta Quadrant of the Milky Way Galaxy. Able to assimilate any and all life form into their collective hive-mind and able to addapt to all forms of offensive capability instantly.
    Bothans Star Wars Humanoid
    Braalians DC Comics' Legion of Super-Heroes
    Bradicor Schlock Mercenary
    Brains The Adventures of Jimmy Neutron: Boy Genius (Win, Lose and Kaboom)
    Breen Star Trek Humanoid
    Bricker Star Trek
    Briori Star Trek
    Brood Marvel Comics
    Brunnen G LEXX Humanoid
    Brunali Star Trek
    Brutes (Jiralhanae) Halo Pack mentality humanoids of great phyical standing. Part of a larger group known as the "Covenant" Intensely loyal to their religious beliefs, intent to completely wipe out human race.
    Budong Farscape
    Bugs from Klendathu Starship Troopers
    Bulrathi Master of Orion
    Buggers Ender's Game series A hive mind species resembling insects. Invaded Earth twice before being destroyed at their home world by Andrew 'Ender' Wiggin.
    Bynars Star Trek


    Name ↓ Source ↓ Type ↓
    Caitians Star Trek: The Animated Series Feline humanoid
    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 Reptilian Humanoid
    Carggites DC Comics' Legion of Super-Heroes
    Carrionites Doctor Who Humanoid
    Cat Red Dwarf Felis Sapiens. Evolved over the course of three million years in deep space, from a domesticated housecat.
    Cathar Star Wars
    Cat People Marvel Comics Feline humanoid
    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 Humanoid
    Centrans Christopher Anvil's Pandora's Planet stories Feline humanoids
    Ceti eels Star Trek II: The Wrath of Khan bug-like ear parasites from Ceti Alpha V
    Chaethe Kathy Tyers's 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 Humanoid
    Chatilians Battlelords of the 23rd Century Humanoid
    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
    Chimera Sui Generis Ben 10
    Chinger Bill, the Galactic Hero
    Chiss Star Wars
    Chmmr Star Control
    Cho-choi Jack McDevitt's Infinity Beach
    Chozo Metroid Bird-like species. Extremely technologically advanced and spread out across the galaxy.
    Chronian Ben 10: Race Against Time Looks just like a human. They have vast Time manipulation powers and able to create Energy beams.
    Chronomyst Ascendancy
    Chryssalids X-COM: UFO Defense
    Cicadian Mark Leach's Marienbad My Love Insectoid
    Cinnrusskin James White's Sector General series
    Cirronians Tracker
    Cizerack Battlelords of the 23rd Century
    Clairconctlar Star Control 3
    Clutch Turtles Liaden universe
    Cocytans The Dig
    Coeurl The Voyage of the Space Beagle by A. E. van Vogt
    Cognocenti Star Trek
    Colatas Farscape Humanoid
    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 Saturday Night Live Humanoid with conical heads
    Coola (Cooler) Dragon Ball Z
    Coreeshi Farscape Humanoid
    Coridanite Star Trek Humanoid
    Corporal Giroro Sgt. Frog
    Corvallen Star Trek Reptilian Humanoid
    Covenant, The Halo Collective of alien species who are allied with each other, Comprised of Grunts, Brutes, Elites, Hunters, Jackals, and Prophets. Religious Hierarchy with intent to destroy the Human Race.
    Creators Nexus: The Jupiter Incident
    Crites Critters films carnivorous hairballs
    Crypto Destroy All Humans!
    Cryons Doctor Who Humanoid
    Ctarl-Ctarl Outlaw Star
    Cthulhi Cthulhu Mythos
    Cthulhu Cthulhu Mythos
    Cybermen Doctor Who
    Cybertronians Transformers Large robots able to change their shape at will into other mechanical constructs. Known more commonly as Transformers.
    Cybyota Orion's Arm
    Cylons Battlestar Galactica Sentient robots. Remnants of a civilization of reptilian aliens (also known as Cylons) in the original series, but created by humans in the remake series. Both mechanical and biological flesh-and-blood versions co-exist, with the biological versions in charge.
    Cynoid Master of Orion III
    Cyrollan The Journeyman Project


    Name ↓ Source ↓ Type ↓
    Daemonites Wildstorm
    Dakkamites Marvel Comics Humanoid
    Daktaklakpak Star Control 3
    Daleks Doctor Who squid-like lifeforms inside tanks
    The Dance Marvel Comics Humanoid
    Dantari Star Wars
    Darjakr'Ul Utopia
    Dark Eldar Warhammer 40,000 Humanoid
    Darloks Master of Orion
    Darrians Traveller RPG
    Darzok Haegemonia: Legions of Iron
    Daxamites DC Comics Humanoid
    Decapodian Futurama Lobster people. Bright red, with tenticals over thier mouths. When they mate, they die horribly.
    Decepticon Transformers Faction of Cybertronians who are opposed to Autobots. Ill intent for human race.
    DearS DearS Humanoid
    Deep Ones H. P. Lovecraft
    Deep Ones X-COM: Terror from the Deep
    Defiance Genesis Rising band of many different races
    Delphons The History of the Galaxy series
    Deltans Star Trek Humanoid
    Delvians Farscape Humanoid - Similar to humans in appearance, but evolved from plants. Blue, bald, Sensitive to sunlight, procreate through air-borne spores.
    Demiurg Warhammer 40,000
    Deneans Farscape Humanoid
    Denebians Star Trek
    Deng Keith Laumer's Bolo series Arachnoids
    Denobulans Star Trek Humanoid
    Dentics Farscape Gastropod / Slug-like. Symbiotic relationship, used for dental hygiene purposes: This small animal thoroughly cleans the teeth of the user in a short amount of time.
    Dentrassis The Hitchhiker's Guide to the Galaxy
    Deoxys Pokémon
    Dessarians Tracker
    Detrovite Ben 10
    Devaronian Star Wars
    Devastators One Mind's Eye
    Devilukean To Love-Ru Humanoid
    Dilbians The Law-Twister Shorty and other stories by Gordon Dickson Ursinoid
    Dnyarri Star Control
    Dog Red Dwarf Humanoid Canine
    Dom Kavash Freelancer
    Dominators DC Comics Humanoid
    Dominators Doctor Who
    DomZ Beyond Good and Evil
    Doog Star Control 3
    the Doublers Stanisław Lem's Eden two-in-one semi-humanoid
    Douwd Star Trek
    Draaknaars Thor series
    Dracs Barry B. Longyear's Enemy Mine and The Enemy Papers
    Draconians Doctor Who reptilian humanoid
    Draenei World of Warcraft
    Drahvins Doctor Who Humanoid
    Draic Kin The Longest Journey, Dreamfall
    Drak Farscape
    Drakh Babylon 5 and Crusade
    Drath Galactic Civilizations: Altarian Prophecy
    Drayan Star Trek
    Dread Lords Galactic Civilizations II: Dread Lords
    Drej Titan A.E.
    Drengin Galactic Civilizations
    Drones (Yanme'e) Halo Flying creatures, appear insectoid. Part of Covenant Hierarchy, ill intent towards humans.
    Druuge Star Control Humanoid
    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


    Name ↓ Source ↓ Type ↓
    Edo Star Trek
    Ego the Living Planet Marvel Comics
    Ekhonides Perry Rhodan
    El-Aurians Star Trek Humanoid
    Eldar Warhammer 40,000 Humanoid
    Elder Gods Cthulhu Mythos
    Elder Thing Cthulhu Mythos
    Eldorians Utopia
    Electrogoomba Super Mario Galaxy Evolutionized species of a Goomba, the species is divided into different variants
    Elerians Master of Orion II Humanoid
    Elites (Sangheili) Halo Technologically superior race of military supremacy. Mainstay of Covenant military until philosophical differences removed them from the Hierarchy. They allied themselves to Humans to combat Covenant. Uncertain allies to humans.
    Elvis Perfect Dark Grey
    Engineers (Huragok) Halo Maintain Halo Rings, not officially part of covenant. Large, pink, squid like creatures. No real threat to Humanity other than maintaining the Halo Rings, which ARE a threat to humanity.
    Eoladi Master of Orion III
    Energy Rider Farscape
    Ep-Hogers Perry Rhodan
    Eridani Battlelords of the 23rd Century Humanoid
    Eschiff London Wild Feline Humanoid
    Esmers Little Big Adventure 2
    E.T E.T. the Extra-Terrestrial
    Ethereals X-COM: UFO Defense
    Exobot Star Trek
    Exquivan Star Control 3
    Evon Master of Orion III Humanoid
    Ewoks Star Wars Humanoid


    Name ↓ Source ↓ Type ↓
    Face of Boe, The Doctor Who
    Face Dancers Dune universe
    Falleen Star Wars
    Felysians Noctis
    Fek'Ihri Star Trek
    Fendahl Doctor Who worm-like lifeform
    Ferengi Star Trek Humanoid. Diminutive stature, huge ears, civilization revolves around personal profit. Male-dominated culture, with subservient females.
    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 A species that intends to assimilate all of existence into its hive mind. Controlled by a single 'Gravemind'. Primary Antagonist of Halo Series. Halo Rings created to subdue and defend against flood.
    Florauna Ben 10
    Fludentri Ascendancy
    Foamasi Doctor Who reptilian humanoids
    Foralbo Utopia
    Ford Prefect The Hitchhikers Guide to the Galaxy
    Forerunners Halo Created Halo Rings, increadibly advanced technologically, but uncertain how far. Never encountered by Humans.
    Forerunners The History of the Galaxy series)
    The Forest of Cheem Doctor Who plant-like humanoids
    Formics Ender Wiggins cycle by Orson Scott Card A hive mind species resembling insects. Invaded Earth twice before being destroyed at their home world by Andrew 'Ender' Wiggin.
    Fotiallian Star Trek
    Fott Battlelords of the 23rd Century
    Frieza Dragon Ball Z
    Frutmaka Ascendancy
    F'sherl-Ganni Schlock Mercenary, also called 'Gatekeepers'
    Furbls Battlelords of the 23rd Century
    Furlings (one of the Four Great Races) Stargate SG-1
    Furons Destroy All Humans! Humanoid
    Futars Dune universe


    Name ↓ Source ↓ Type ↓
    Gadmeer Stargate SG-1
    Gaim Babylon 5
    Galactus Marvel Comics
    Galaxoid Calvin and Hobbes
    Galvan Ben 10
    Galvanic Mechomorph Ben 10
    Gamilons/Gamilus Space Battleship Yamato/Star Blazers Humanoid
    Gamorrean Star Wars
    Gand Star Wars
    Ganymean James P. Hogan's Giants Series Large technologically advanced humanoids
    Gaols Titan A.E.
    Garthlings David Brin's Uplift Universe
    The Gelth Doctor Who wraith-like humanoids
    GELF Red Dwarf Genetically Enhanced Life Form -- a wide variety of artificial 'aliens' created by human scientists. Some are humanoid, others are not. All life in the Red Dwarf universe originated on Earth, there are no true aliens of extraterrestrial origins.
    Gemini Battlelords of the 23rd Century
    Geonosian Star Wars
    Geth Mass Effect
    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
    Glapum'tians Valérian and Laureline
    Gloarft Megas XLR
    Gnaar Serious Sam: The First Encounter
    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 universe)
    G.R.A.I.S.E. Melonpool
    Grans Star Wars Humanoid
    The Graske Doctor Who Humanoid
    Great Race of Yith H. P. Lovecraft
    Grendarl Master of Orion III
    Gretchin/Grotz Warhammer 40,000 Humanoid
    Greys popular mythology
    Grogs Larry Niven's Known Space
    Grudeks Farscape Humanoid
    Grue Pitch Black Humanoid
    Grunds Marvel Comics Humanoid
    Grundos Neopets
    Grunts (Unggoy) Halo Short creatures, mostly used as fodder for bigger creatures in Covenant. Breath a gas native to their homeworld.
    Guardians of the Universe DC Comics Humanoid
    Gubru David Brin's Uplift Universe
    Gungans Star Wars


    Name ↓ Source ↓ Type ↓
    H'Harn Edmond Hamilton's Star Kings series
    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 Humanoid
    Hangi Farscape Humanoid
    Hani C. J. Cherryh's Chanur novels
    Hanshaks Ascendancy
    Harammins The History of the Galaxy series)
    Harika Star Control 3
    Haydonites Robotech
    Headcrabs Half-Life
    Headies Noon Universe
    Heechee Frederik Pohl
    Herald Star Control 3
    Hermat Star Trek
    High Ones Elfquest Humanoid
    Hiigarans Homeworld Humanoid
    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 Large, reptillian fighting machines with large blades at each of their joints and on their heads. Often referred to as 'salad mixers'.
    Horta Star Trek
    Howard the Duck Marvel Comics
    Hrossa C. S. Lewis' Ransom Trilogy Humanoid
    Hunters (Lekgolo) Halo Large creatures of immence strength and stature. They are made of hundreds if not thousands of worms formed together to make a single mind. Part of the Covenant Hierarchy.
    Hunters Star Trek
    Hur'q Star Trek Humanoid
    Hutts Star Wars
    Husnock Star Trek
    Hydrans Star Trek Humanoid
    Hydrogues Saga of the Seven Suns Live in gas giants
    Hykraius DC Comics' Legion of Super-Heroes
    Hynerians Farscape Slug-like. The Hynerian empire governs many worlds, some of which have humanoid inhabitants


    Name ↓ Source ↓ Type ↓
    Iberons Imperium Galactica II: Alliances
    Ibs Robert J. Sawyer's Starplex
    Ice Warriors Doctor Who humanoid
    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 Humanoid
    Ilwrath Star Control
    Imsaeis Master of Orion
    Imskians DC Comics' Legion of Super-Heroes
    Ing Metroid Prime 2:Echoes Beings native to a dark mirror demension. Some can change into forms relating to solid, liquid, and gasseous states. They have the ability to possess and corrupt both living and dead creatures. Main enemy to Luminoth.
    Insects The History of the Galaxy series
    Interions Farscape Humanoid
    Invid/Inbit Robotech: The New Generation and their counterparts from Genesis Climber Mospeada crab-like
    Irkens Invader Zim Humanoid
    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


    Name ↓ Source ↓ Type ↓
    Jaffa Stargate SG-1
    Jaridians Earth: Final Conflict Humanoid
    Jawa Star Wars
    Jem'Hadar Star Trek
    Jenova Final Fantasy 7
    Jezzedaic Priests Battlelords of the 23rd Century
    Jiralhanae Halo Known more commonly as Brutes. Part of Covenant Hierarchy.
    Jjaro Marathon Trilogy
    J'naii Star Trek
    Jocaceans Farscape Humanoid
    Jophur David Brin's Uplift Universe
    Jotoki Larry Niven's Known Space
    Joozian South Park
    Judoon Doctor Who rhino-like Humanoid


    Name ↓ Source ↓ Type ↓
    Kadi Star Trek
    Kafers 2300 AD Humanoid
    Kaleds Doctor Who Humanoid
    Kalish Farscape Humanoid
    Kal-Kriken Utopia
    Kalliran C. J. Cherryh's Alliance-Union universe
    Kambuchka Ascendancy
    Kanamit To Serve Man (The Twilight Zone) Humanoid
    Kang and Kodos The Simpsons Squid-like. Green, single-eyed squids intent on conquering Earth
    Karemma Star Trek Humanoid
    Kariak Haegemonia: Legions of Iron
    Kazon Star Trek Humanoid
    Kdatlyno Larry Niven's Known Space
    Kerons Sgt. Frog
    Key-Guardians Utopia
    King Ghidorah Godzilla films
    Kineceleran Ben 10
    Kharaa Natural Selection
    Kherubim Wildstorm
    Khunds DC Comics Humanoid
    Khurtarnan Farscape Humanoid
    Kif C. J. Cherryh's Chanur novels
    Kig-yar Halo
    Kilaaks Destroy All Monsters
    Kilrathi Wing Commander games)
    Kizanti Battlelords of the 23rd Century Humanoid
    Kimera Earth: Final Conflict
    King Cold Dragon Ball Z
    Kivar Roswell
    Klaestron Star Trek
    Klackons Master of Orion
    Kleer Skeleton Serious Sam: The First Encounter
    Klingons Star Trek Humanoid
    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 Humanoid
    Kreel Star Trek
    Kreely Schlock Mercenary
    Kreetassan Star Trek
    Krell Forbidden Planet
    Krenim Star Trek
    Kriken Metroid Prime Hunters
    Krith Richard C. Meredith's Timeliner Trilogy
    Krogan Mass Effect
    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 Humanoid
    Kryten Red Dwarf Series 4000 Mechanoid
    Kssthrata Schlock Mercenary
    K'tang Star Control 3
    Ktarian Star Trek
    Kulturan The Sinusoidal Spaghetti
    Kymellians Marvel Comics Humanoid body with horses head
    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 Felinoid - large bi-pedal tigers. Male: Kzintosh, Female: Kzinrett. Aggressive space-faring carnivores, with sub-sapient females


    Name ↓ Source ↓ Type ↓
    Lallorans DC Comics' Legion of Super-Heroes
    Lance Corporal Dororo Sgt. Frog
    Laxidasians Marvel Comics Humanoid
    Lectroids The Adventures of Buckaroo Banzai Across the Eighth Dimension
    Leerans K. A. Applegate's Animorphs
    Lekgolo Halo
    Leoniders Noon Universe Humanoid
    Lepidopterran Ben 10
    Leviathan Farscape Bio-mechanoid (Artificially engineered, living sentient spaceship. Capable of natural procreation)
    Liir Sword of the Stars
    Limax Ben 10
    Lipul Star Trek
    Lithians James Blish's A Case of Conscience
    Livrai Joe Haldeman's Mindbridge
    Lk (fungi type alien) Star Control 3
    Loboan Ben 10
    Lobster Men X-COM: Terror from the Deep
    Locust Gears of War Aliens that seem to origionate from beneath the surface of the earth. Intent to destroy humanity.
    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 Peaceful race that worships "Light of Aether." Fight against Ing for control of homeworld. Only a single Luminoth is ever encountered, known as U-Mos.
    Lunarians Final Fantasy IV
    Lurian Star Trek
    Lurmans Doctor Who Humanoid
    Luxans Farscape Humanoid
    Ly-Cilph The Night's Dawn Trilogy
    Lycocians Star Trek
    Lyrans Star Fleet Universe


    Name ↓ Source ↓ Type ↓
    M-113 Creature Star Trek
    Macra Doctor Who Crustacoid
    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 Humanoid
    Mantis Conquest: Frontier Wars
    Marklars South Park
    Marmosians Ascendancy
    Martians H. G. Wells' The War of the Worlds
    Martians Edgar Rice Burroughs's Barsoom series Humanoid
    Martians Marvin the Martian from Looney Tunes and Duck Dodgers
    Martians Premendra Mitra's Mangalbairi (The Martian Enemies)
    Martians Ray Bradbury's The Martian Chronicles Humanoid
    Martians Aelita (1924 movie) Humanoid
    Martians Mars Attacks (Topps trading cards) and Mars Attacks! (Tim Burton movie) Humanoid
    Martians Quatermass and the Pit
    Martians Larry Niven's Known Space
    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
    Megawhatt Ben 10
    Meklars Master of Orion
    Melconians Keith Laumer's Bolo series canine-like humanoids
    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 Microman
    Micronoids X-Com: Apocalypse Sentient parasitic bacteria
    Minbari Babylon 5 Humanoid
    Minions Ascendancy
    Minosians Star Trek
    Mintakans Star Trek
    Miradorn Star Trek
    Misha Battlelords of the 23rd Century Humanoid
    Mmrnmhrm Star Control
    Mon Calamari Star Wars
    Mondoshawan The Fifth Element Humanoid
    Monoids Doctor Who
    The Mooninites Aqua Teen Hunger Force (individually: Igninokt and Err)
    Mork Mork and Mindy
    Morlocks H. G. Wells' The Time Machine
    Morlocks Larry Niven's Known Space
    Moroks Doctor Who Humanoid
    Mor-Taxans War of the Worlds (TV series - first season)
    Morthren War of the Worlds (TV series - second season)
    Movellans Doctor Who
    Moxx of Balhoon Doctor Who Humanoid
    Mri C. J. Cherryh's Faded Sun trilogy Humanoid
    Mr. Saturn EarthBound
    Mrrshan Master of Orion
    Mudokons Oddworld series
    Mutons X-COM: UFO Defense
    Mutzachans Battlelords of the 23rd Century Humanoid
    Muuh Orion's Arm
    Mycon Star Control
    The Mysterons Captain Scarlet and the Mysterons


    Name ↓ Source ↓ Type ↓
    Naglon Doctor Who Humanoid
    Nairnama Independence War, aka I-War
    Namekian Dragon Ball Humanoid
    Narn Babylon 5 Humanoid
    Nausicaans Star Trek
    Neadlehead Win, Lose and Kaboom
    Nebari Farscape Humanoid
    Nebular Calvin and Hobbes
    Necris Unreal tournament
    Necrons Warhammer 40,000
    Nemet C. J. Cherryh's Alliance-Union universe
    Nephilim Wing Commander: Prophecy
    Neptunians Futurama Humanoid
    Neutrals Futurama Humanoid
    New Gods 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 Humanoid
    Nyronds passim in the works of Zander Nyrond; occasionally in those of his "brother" Soren


    Name ↓ Source ↓ Type ↓
    Oans DC Comics Humanoid
    Oannes Babylonian mythology Humanoid
    Oankali Octavia Butler's Xenogenesis series
    Ob'enn Schlock Mercenary
    Ocampa Star Trek Humanoid
    Oculons Ascendancy Humanoid
    Ogri Doctor Who
    Ogrons Doctor Who Humanoid
    Old Ones Warhammer 40,000
    Omicronians / Popplers Futurama
    Ood Doctor Who Humanoid
    Optera Doctor Who
    Orandoans DC Comics' Legion of Super-Heroes
    Orfa Ascendancy
    Organians Star Trek
    Ori Stargate SG-1 Humanoid, Ascended to a higher plain of existence in non-corporial form
    Orion Star Trek
    Orion Rogues Battlelords of the 23rd Century
    Orions Master of Orion
    Orkans Mork and Mindy
    Orks Warhammer 40,000 Humanoid
    Orsians Tracker
    Ortheans Mary Gentle's Golden Witchbreed Humanoid
    Ortog Star Control
    Orz Star Control
    Outsiders Larry Niven's Known Space
    Overlords Childhood's End by Arthur C. Clarke
    Owa Star Control 3


    Name ↓ Source ↓ Type ↓
    Paan'uri Schlock Mercenary Dark matter entities
    Pah Wraith Star Trek
    Pak, a.k.a. Protectors Larry Niven's Known Space books Humanoid, with three distinct life stages. First stage: Child, Second Stage: Breeder (known on earth as Homo Erectus), Third Stage: Protector, (superintelligent, could not survive on earth)
    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 Humanoid
    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, armless, two manipulative heads, brain in torse. Evolved from herbivorous herd animals. Most technologically advanced species in Known Space.
    Pilots Farscape Crustaceanoid
    Pinkunz Space Quest
    Pisciss Volanns Ben 10
    Pkunk Star Control
    Ploxis Star Control 3
    Polymorph Red Dwarf
    Porquinhos Orson Scott Card's Speaker for the Dead Humanoid
    Posleen John Ringo's "Legacy of the Aldenata"
    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
    Proteans AdventureQuest morphing metallic blobs
    Protheans Mass Effect
    Protoss StarCraft
    Psilons Master of Orion
    Psirens Red Dwarf Shape Changing GELFs
    Psychlos Battlefield Earth Humanoid
    Psychons Space: 1999
    Dremer Gene Brewer's K-PAX
    Protoculture Macross series
    Polionation Tech Sims 2
    The Puppet Masters Robert A. Heinlein book of the same name
    Purple Aliens It's Walky!
    Pyrians Gene Rodenberry's Andromeda Methane breathing squid-like race
    Pyronite Ben 10
    Pyroviles Doctor Who Humanoid
    Python Lizards Battlelords of the 23rd Century


    Name ↓ Source ↓ Type ↓
    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
    Quarians Mass Effect
    Qwardians DC Comics


    Name ↓ Source ↓ Type ↓
    Raas Master of Orion III
    Rabotevs Harry Turtledove's Worldwar book series a subject species of the Race
    Race, The Moreau Series Amoeboid
    The Race Harry Turtledove's Worldwar book series Reptilian
    Rachni Mass Effect
    Raiel Peter F. Hamilton's "Pandora's Star"
    Rako-Gorda Utopia
    Ram Pythons Battlelords of the 23rd Century
    Rancors Star Wars
    Raptors Nexus: The Jupiter Incident
    Raxacoricofallapatorians Doctor Who
    Re'ol Stargate SG-1 Humanoid
    Reapers Doctor Who
    Reapers X-COM: UFO Defense
    Reapers Mass Effect
    Regul C. J. Cherryh's Alliance-Union universe
    Relgarians Farscape Humanoid
    Remans Star Trek
    Replicators Stargate SG-1 Artificial lifeform. Two variants are known to exist, either in a small mechanical insect shape as well as full humanoid
    Re'tu Stargate SG-1
    Rigellians (Simpsons) (including Kang and Kodos) The Simpsons
    Rigellians Lensman books 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
    Rimmer Red Dwarf Hologram-humanoid
    Risa Star Trek
    Robotech Masters Robotech
    Rodians Star Wars
    Rogue Simulants Red Dwarf Humanoid
    Roger the Alien American Dad
    Romulans Star Trek Humanoid
    Rull The War against the Rull by A. E. van Vogt
    Rutans Doctor Who
    Ryqril Timothy Zahn's The Blackcollar


    Name ↓ Source ↓ Type ↓
    Saiyan Dragon Ball Z Humanoid
    Sakkra Master of Orion
    Sal-Kadeem Utopia
    Salarians Mass Effect
    Sandworm Dune universe
    Sangheili Halo
    San 'Shyuum Halo
    Sariens Space Quest
    Sarturians Utopia
    Sau-Bau Battlelords of the 23rd Century
    Scarrans Farscape Humanoid
    Schniarfeurs Valérian and Laureline
    Scorvians Farscape Humanoid
    Scrin Command & Conquer
    Sebaceans Farscape Humanoid. Genetically engineered off-shoot of humans, harvested from Earth 27.000 years ago. Lower heat resistance than humans, but double the average life expectancy
    Second through Last Men Olaf Stapledon's Last and First Men
    Sectoids X-COM: UFO Defense
    Seekers Advent Rising
    Selay Star Trek
    Selkath Star Wars Humanoid
    Seraphim Supreme Commander
    Sergeant Keroro Sgt. Frog
    Sergeant Major Kururu Sgt. Frog
    Séroni Space Trilogy Humanoid
    Shadows Babylon 5 Arachnid, capable of phase-shifting to turn invisible
    Shalka Doctor Who
    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 Humanoid
    Shinari Imperium Galactica II: Alliances
    Shingouz Valérian comics
    Shivans Descent: FreeSpace – The Great War
    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
    Silfen Peter F. Hamilton's "Pandora's Star" Humanoid
    Silver Surfer Marvel Comics
    Sirians Serious Sam: The First Encounter
    Skaarj Unreal (series)
    Skedar Perfect Dark
    Skinnies Starship Troopers Arachnoids
    Skolarians Zak McKracken and the Alien Mindbenders
    Skrulls Marvel Comics
    Slavers (see Thrint) Larry Niven's Known Space
    Slitheen Doctor Who
    Sludge Ben 10
    Slylandro Star Control
    Snakemen X-COM: UFO Defense
    Snarks Marvel Comics
    Snotlings Warhammer 40,000 Humanoid
    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 Humanoid
    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
    Spirits Stargate SG-1 Humanoid
    Splixson Ben 10
    S'pht Marathon Trilogy
    Spock Star Trek
    Spoo Babylon 5
    Squirps Super Paper Mario
    Squiz-Quijy Utopia
    Strogg Quake II and Quake 4
    Stsho C. J. Cherryh's Chanur novels
    Suliban Star Trek Humanoid
    Sun-Dog Terry Pratchett's Dark side of the Sun Large sentient beings that live in the vacuum of space. Capable of traveling through hyperspace. Any object they engulf will travel through hyperspace with them. The Sub-Dog species operate a successful business transporting spaceships across vast distances for other races in exchange for currency.
    Superman Superman I-IV & Superman Returns
    Supox Star Control
    Serrakin Stargate SG-1 Humanoid
    Swaparamans Ascendancy
    Sycorax Doctor Who Humanoid
    Sye-Men Battlelords of the 23rd Century
    Sykarians Farscape Humanoid
    Syreen Star Control Humanoid


    Name ↓ Source ↓ Type ↓
    Taalo Star Control
    Taelons Gene Roddenberry's Earth: Final Conflict Humanoid
    Tachidi Master of Orion III
    Tagorians Noon Universe
    Tai Genome
    Taiidan Homeworld Humanoid
    Tak Tak Star Trek
    Talan Outcast
    Talarians Star Trek
    Talaxians Star Trek Humanoid
    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 Humanoid
    Tarkas Sword of the Stars
    Tasoth X-COM: Terror from the Deep
    Tatanga Super Mario Land Humanoid
    Tau Warhammer 40,000 Humanoid
    Tavleks Farscape Humanoid
    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 Humanoid
    Terileptils Doctor Who
    Terran Final Fantasy IX
    Terra Novans Star Trek
    Terrelian Star Trek Humanoid
    Terrellian Star Trek Humanoid
    Terrians Earth 2 Humanoid
    Tetramand Ben 10
    Tetraps Doctor Who
    Thals Doctor Who
    Thalan Galactic Civilizations II: Dread Lords
    Thalonian Star Trek
    Than-Thre-Kull Andromeda Insectoids
    Thanagarians DC Comics
    Thargoids Elite
    Thasian Star Trek
    Therbian (See Aaamazzarite) Star Trek
    Thep Khufan Ben 10
    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 Humanoid
    Titanians DC Comics' Legion of Super-Heroes
    Titanides John Varley's Gaea-trilogy
    T'Lani Star Trek
    Tleilaxu Dune universe
    Tnuctip Larry Niven's Known Space
    Toclafane Doctor Who
    Tok'ra Stargate SG-1
    Toku'star Ben 10
    Tollan Stargate SG-1
    Toluen Imperium Galactica II: Alliances
    Torians Galactic Civilizations
    Trabe Star Trek Humanoid
    Tractators Doctor Who
    Traeki David Brin's Uplift Universe
    Tralfamadorians Kurt Vonnegut's The Sirens of Titan and Slaughterhouse 5
    Tran Alan Dean Foster's Icerigger
    Transylian Ben 10
    Transylvanians Rocky Horror Picture Show
    Transformers Transformers
    Trandoshans Star Wars
    Traskans Farscape Humanoid
    Treecats David Weber's Honorverse
    Treens Dan Dare stories
    Tribbles Star Trek (compare with 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
    Tunnel Makers Einstein's Bridge Aquatic/Shape shifting
    Tusken Raiders Star Wars Humanoid
    Turians Mass Effect
    Twi'leks Star Wars Humanoid
    Twinsunians Little Big Adventure
    Tyranids Warhammer 40,000
    Tzenkethi Star Trek


    Name ↓ Source ↓ Type ↓
    Umgah Star Control
    Unas Stargate SG-1
    Uncreated Marvel Comics
    Unggoy Halo
    Ungooma Ascendancy
    Uniocs Schlock Mercenary
    Unity Superman: The Animated Series
    Ur-Quan Kzer-Za Star Control
    Ur-Quan Kohr-Ah Star Control
    Utrom Teenage Mutant Ninja Turtles
    Uryuoms El Goonish Shive
    U'tani Star Trek
    Utwig Star Control Humanoid


    Name ↓ Source ↓ Type ↓
    Vaadwaur Star Trek
    Vademon Digimon
    Vanacancia Utopia
    Varga plants Doctor Who
    Vardians Tracker
    Vardrag Nexus: The Jupiter Incident
    Vasudans Descent: FreeSpace – The Great War Humanoid
    Vegetaliens Tommy and PJ
    Velantians Lensman books
    Venek Farscape Humanoid
    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
    Viltrumites Invincible
    Vineans Yoko Tsuno comic Humanoids with blue skin
    Visitors V
    Vogons The Hitchhiker's Guide to the Galaxy
    Vok Beast Wars
    Vorc Farscape Humanoid
    Vorcarian bloodtracker Farscape Humanoid
    Vorlons Babylon 5
    Vorta Star Trek Humanoid
    Vortex life forms Ecco the Dolphin
    Vorticon Commander Keen Humanoid
    Vortigaunt Half-Life Humanoid
    Vortisaurs Doctor Who audio dramas
    Voth Star Trek
    Vroarscans Utopia
    Vulcans Star Trek Humanoid
    Vulpimancer Ben 10
    VUX Star Control
    Vyro-Ingo Star Control 3


    Name ↓ Source ↓ Type ↓
    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
    Weeping Angels Doctor Who Humanoid
    Weevils Torchwood Humanoid
    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 Humanoid
    Wraith Stargate Atlantis Humanoid
    W'rkncacnter Marathon Trilogy


    Name ↓ Source ↓ Type ↓
    Xandarians Marvel Comics Humanoid
    Xanthuans DC Comics' Legion of Super-Heroes
    Xarians Battlelords of the 23rd Century
    Xarquids X-COM: Terror from the Deep
    Xchagger Star Control
    Xel'Naga StarCraft
    Xenomorphs Alien movies
    Xenexian Star Trek
    Xilians Invasion of Astro-Monster and Godzilla: Final Wars
    Xindi Star Trek Humanoid
    X-Nauts Paper Mario: The Thousand-Year Door
    Xorda Archie Comics' Sonic the Hedgehog comics
    X Parasites Metroid Fusion
    Xyrillian Star Trek


    Name ↓ Source ↓ Type ↓
    Yag-Kosha Robert E. Howard's The Tower of the Elephant humanoid elephant
    Yanme'e Halo
    Yautja Predator
    Yeerks K. A. Applegate's Animorphs slug-like 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
    Yorn Star Control 3
    Yridian Star Trek
    Yugopotamians The Fairly Oddparents
    Yuki Nagato The Melancholy of Haruhi Suzumiya
    Yuuzhan Vong Star Wars Humanoid


    Name ↓ Source ↓ Type ↓
    Zabrak Star Wars Humanoid
    Zakdorns Star Trek
    Zaldans Star Trek
    Zalkonians Star Trek
    Zaphod Beeblebrox The Hitchhiker's Guide to the Galaxy
    Zarbi Doctor Who
    Zenetan Farscape Humanoid
    Zenn-Lavians Marvel Comics Humanoid
    Zen Rigeln Battlelords of the 23rd Century Humanoid
    Zentradi Macross, adapted as the Zentraedi in Robotech Humanoid
    Zen-Whoberis Marvel Comics Humanoid
    Zerg StarCraft
    Zhodani Traveller RPG
    Zinoboppians Melonpool
    General Zod Superman II
    Zoq-Fot-Pik Star Control
    Zorgons Sluggy Freelance
    Zorgons Zathura
    Zygons Doctor Who Humanoid​

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