List of fictional extraterrestrial species and races: L


NameSourceType
L1Z1X MindnetTwilight Imperiumcybernetic-organic hybrids
Lagomorphic HumanoidsAdventure Time: Distant LandsRabbit-like humanoids: Y5, Y5’ Dad and KS-2
LalloransDC Comics' Legion of Super-Heroes
Lance Corporal DororoSgt. Frog
Large Nostril People of Boodie-NenInvader Zim
LavosSquare-Enix's Chrono Triggerplanetary parasite
LaxidasiansMarvel Comicshumanoid
LectroidsThe Adventures of Buckaroo Banzai Across the Eighth Dimension
LeeransK. A. Applegate's AnimorphsA yellow amphibian species with tentacles for arms that resembles a manta ray or frog. They live in the vast oceans on their homeworld, Leera, which has only one small continent of land. Leerans have advanced psychic powers, which make them very desirable Yeerk hosts.
LekgoloHalo
LegislatorsCaptive State
Lenny LonglegsAdventure Time: Distant Lands
LeonidersNoon Universehumanoid
LepidopterranBen 10Lepidopterrans come in two variations depending on the series. In the Original series, they resemble a combination of dragonflies, hornets, and butterflies, and are equipped with sharp stingers on their tails and four penduculated eyes on the sides of their heads. In the reboot, however, they more closely resemble humanoid dragonflies, complete with antenna and compound eyes. Both versions can spray foul smelling slime and fly at high speeds, but are frail and not particularly strong.
LeviathanFarscapebio-mechanoid
LeviathanMass Effect 3Giant aquatic creatures that serve as precursors and creators of the Reapers.
Life FibersKill la KillThread-like creatures that can be merged with either clothing or human beings. Appear to be a hostile hive-mind with the ulterior motive of planetary destruction.
LiirSword of the Stars
LimaxBen 10Gelatinous, shapeshifting creatures who are carnivorous in nature, more specifically preying on elderly humans. They are fond of high levels of heat, but are weak to and afraid of water.
LipulStar Trek
LithiansJames Blish's A Case of Conscience
Little Guys2300 AD
LivraiJoe Haldeman's Mindbridge
Lk Star Control 3
LlornThe Haunted StarsNeckless bipeds who veil themselves and their spacecraft in shadow. Soft-spoken but powerful. Feared on the planet Ryn, whose empire they destroyed 30 thousand years ago.
LoboanBen 10Aliens resembling werewolves hailing from the moon Luna Lobo, they are very vicious hunters. Alongside enhanced strength, speed, hearing, and agility, they can see in the dark and unleash powerful sonic howls.
Lobster MenX-COM: Terror from the Deep
LocustGears of Waraliens that originate from beneath the surface of the Earth. Intent on destroying humanity.
LogriansThe History of the Galaxy series
LohvoSluggy Freelance
LombaxesRatchet & Clank
LoomiSpace Patrolcreatures inhabiting Jupiter with heat-retaining skins
LoricLorien LegaciesA peaceful race from the planet Lorien, who were almost wiped out by another alien race, the Mogadorians. They currently reside on Earth.
LorwardiansKim Possiblehumanoid
LucratiansUtopia
LumasSuper Mario Galaxy, Super Mario Galaxy 2
LuminothMetroid Prime 2: Echoespeaceful race that worships "Light of Aether." Fight against Ing for control of homeworld. Only a single Luminoth is ever encountered, known as U-Mos.
LunariansFinal Fantasy IV; light-haired humanoid beings from the Moon.
LunarianTouhou Projecthumanoid alien race that lives on the Earth's moon. Notable members of the race would be Kaguya Houraisan and Eirin Yagokoro.
LunatonePokémon
LurianStar Trek
LurmansDoctor WhoHumanoid
LuxansFarscapehumanoid
Ly-CilphThe Night's Dawn Trilogy
LycociansStar Trek
LyransStar Fleet Universe