List of fictional alien species: L explained

Name Source Type
L1Z1X MindnetTwilight Imperium cybernetic-organic hybrids
Lagomorphic Humanoids Rabbit-like humanoids: Y5, Y5’ Dad and KS-2
Lallorans
Lance Corporal Dororo Sgt. Frog
Large Nostril People of Boodie-Nen Invader Zim
Lavos planetary parasite
humanoid
Lectroids The Adventures of Buckaroo Banzai Across the Eighth Dimension
K. A. Applegate's Animorphs A 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 (originally, Leerans needed to go on land to mate, but technology has made that unnecessary). Leerans have advanced psychic powers, which make them very desirable Yeerk hosts.
Halo
LegislatorsCaptive State
Lenny Longlegs
humanoid
Ben 10 Lepidopterrans 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.
Farscape bio-mechanoid (artificially engineered, living sentient spaceship. Capable of natural procreation)
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.
Liir Sword of the Stars
Ben 10 Gelatinous, 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.
Star Trek
Lithians James Blish's A Case of Conscience
Little Guys
Joe Haldeman's Mindbridge
Lk (fungi type alien) Star Control 3
Neckless 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.
Ben 10 Aliens 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 Men
Gears of War aliens that originate from beneath the surface of the Earth. Intent on destroying humanity.
The History of the Galaxy series
Lohvo
Lombaxes Ratchet & Clank
Space Patrol creatures inhabiting Jupiter with heat-retaining skins
Lorien Legacies A peaceful race from the planet Lorien, who were almost wiped out by another alien race, the Mogadorians. They currently reside on Earth.
Lorwardians Kim Possible humanoid
Lucratians Utopia
Lumas Super Mario Galaxy, Super Mario Galaxy 2
Luminoth 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 (月の民, Tsuki no tami?, lit. "Moon People"); light-haired humanoid beings from the Moon.
Lunarian Touhou Project humanoid alien race that lives on the Earth's moon. Notable members of the race would be Kaguya Houraisan and Eirin Yagokoro.
Pokémon
Star Trek
Lurmans Doctor Who Humanoid
Luxans Farscape humanoid
The Night's Dawn Trilogy
Star Trek
Lyrans Star Fleet Universe