List of fictional extraterrestrial species and races: C


NameSourceType
CabalDestiny franchiseLarge, rhinoceros-like humanoids from the planet of Torobatl. Their politics and society are similar to that of Ancient Rome.
Caged dudeAdventure Time: Fionna and Cake
CaitianStar Trek: The Animated SeriesFeline humanoid
CalamarainStar Wars
CalebanFrank Herbert's Whipping Starinvisible telepathic beings who are actually the minds of stars
CalciniteX-COM: Terror from the Deep
CallineansStar FleetHumanoid
CalvinLifeCephalopod-like
CalibanC. J. Cherryh's Alliance-Union universe
CampbelliansChōdenji Robo Combattler V
CanariaAdventure Time: Fionna and Cake
CapelonsAscendancy
ConductoidBen 10Black-skinned aliens from planet Teslavorr, Conductoids are cycloptic humanoids with plugs on their fingers, prehensile tail, and antenna on their heads. They have the ability to absorb energy and redirect it as electrical energy.
CascanBen 10Hailing from planet Cascareau in the Andromeda Galaxy, these aliens are very similar to Orishans, being armored humanoids able to manipulate water.
CardassianStar TrekReptilian Humanoid
CarggiteDC ComicsA humanoid species from the planet Cargg who can split into three bodies at will. The Legion of Super-Heroes member Luornu Durgo is a Carggite.
CarrionitesDoctor WhoHumanoid
CatRed DwarfFelis Sapiens. Evolved over the course of three million years in deep space, from a domesticated housecat.
CatbugBravest WarriorsA combination part cat and part ladybug, Catbug simultaneously exists in two dimensions; reality and the See-Through Zone.
CatharStar WarsCat-like humanoid
CatkindDoctor WhoFeline Humanoid.
Cat PeopleThe Garfield ShowFeline humanoid.
Cat PeopleMarvel ComicsFeline humanoid
CatalyteUtopia
CatteniAnne McCaffrey's Catteni Series
CavalierTommy & PJ
CazareRatchet & Clank
CelareonConquest: Frontier Wars
CelatidX-COM: UFO Defense
CelestialsMarvel Comics
CelestialsapienBen 10Horned humanoids with a body similar to that of a starry night sky from the Forge of Creation, they can warp space, time and reality. However, they are limited by their psyche: their minds are divided into separate personalities that need to agree to do even simple tasks, causing them to remain motionless for long periods of time.
CentauriBabylon 5Humanoid
CentransChristopher Anvil's Pandora's Planet storiesFeline humanoids
CerebrocrustaceanBen 10Crab-like aliens from the planet Encephalonus IV. They are extremely intelligent and can generate electricity.
Ceti eelStar Trek II: The Wrath of Khanbug-like brain parasites from Ceti Alpha V
ChaetheKathy Tyers's One Mind's Eye
ChalnothStar Trek
ChamachiesAscendancy
ChangelingStar Trek
ChaosIndependence War
CharridsFarscapeHumanoid
ChaschJack Vance's Planet of Adventure SeriesBig headed humanoids divided in subspecies.
ChatilianBattlelords of the 23rd CenturyHumanoid
CheblonsImperium Galactica II: Alliances
CheelaDragon's Egginhabitants of neutron star
CheloniansDoctor Who novels
ChenjesuStar ControlCrystalline life-form
CherubsHomestuckCherubs are characterized by their green exoskeleton.
ChevannoUtopia
ChevinStar WarsAmebelodontidae alien race
ChiC. J. Cherryh's Chanur novels
ChigsSpace: Above and Beyond
ChimeraResistance: Fall of ManReptilian Hybrids between virus and host
Chimera Sui GenerisBen 10Green-skinned cephalopodic humanoids from the planet Vilgaxia.
ChingerBill, the Galactic Hero
ChissStar WarsBlue-skinned red-eyed humanoids
ChmmrStar Control
Cho-choiJack McDevitt's Infinity Beach
ChronovoreDoctor WhoUniverse devourers
ChozoMetroidBird-like species. Extremely technologically advanced and spread out across the galaxy.
ChronianBen 10: Race Against TimeA humanoid species who can manipulate time.
ChronomystAscendancy
ChryssalidX-COM: UFO Defense
CinnrusskinJames White's Sector General series
CirroniansTracker
CizerackBattlelords of the 23rd Century
ClairconctlarStar Control 3
Clutch TurtlesLiaden universe
CocytansThe DigFurry, bird-like beings trapped in "Spacetime Six", a parallel universe.
CoeurlThe Voyage of the Space Beagle by A. E. van VogtSimilar to a big cat; prehensile tentacles sprouting from shoulders. Feeds on potassium and/or organic phosphorus.
CognocentiStar Trek
ColatasFarscapeHumanoid
ColeAdventure Time: Distant Lands
ColeTracker
CollectorsMass Effect 2Insect-like form of the Protheans modified to serve the Reapers
ColonistsThe X-Files
Colour out of spaceH. P. Lovecraft
ColuansDC ComicsA humanoid species with green skin and vast intelligence. The supervillain Brainiac and his family are Coluans.
CombineHalf-Life 2An alien empire. Many of the "Combine" seen in the game are humans who have been assimilated or collaborate as brutal police troopers.
ConeheadsSaturday Night LiveHumanoid with conical heads
Control BrainsInvader ZimThe Control Brains assign the Irken race with roles and are the unspoken leaders of the Irken Empire.
CoreeshiFarscapeHumanoid
CoridaniteStar TrekHumanoid
Corporal GiroroSgt. Frog
CorvallenStar TrekReptilian Humanoid
CovenantHaloCollective of alien species who are allied with each other, Composed of Grunts, Brutes, Elites, Hunters, Jackals, and Prophets. Religious Hierarchy with intent to destroy the Human Race.
CrystalsRaidenHi-tech aliens that has control over red crystals with unlimited powers, which are used to power up their weapons and equipment.
CragmiteRatchet & Clank
CreatorsNexus: The Jupiter Incident
CrescendollsInterstella 5555An alien band, inspired by the Daft Punk song of the same name.
CritesCritters filmscarnivorous hairballs
CryonsDoctor WhoA crystalline humanoid race from planet Telos, they cannot survive temperatures above the freezing point, boiling and steaming in said temperatures.
Ctarl-CtarlOutlaw Star
CthulhuCthulhu Mythos
CuberAdventure Time
CybermenDoctor WhoMarauding cybernetic life-forms. Originally an alien race driven to conversion by catastrophic climate change, more recently reimagined as assimilated humans.
CybertroniansTransformersLarge robots from planet Cybertron able to change their shape at will into other mechanical constructs, most commonly varying types of vehicles like planes and trucks. Known more commonly as Transformers.
CybyotaOrion's Arm
CyclonsMetroid series
CylonsBattlestar GalacticaSentient robots. Remnants of a civilization of reptilian aliens 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.
CynoidMaster of Orion III
CyrollanThe Journeyman Project