Explorers of the American West.

The business arm of Lex Luthor, Lexcorp claims to be dedicated to the embetterment of mankind, while tends to act contrary to that goal.

An international coalition of superhuman operatives created to invade the US and curtail any future US intervention; in response to the US preemptive strike against a Middle Eastern nuclear program.

The Initiative team stationed in Philadelphia. It is led by the Revolutionary.

Team of heroes, who now are old.

Old team from the days of World War II.

Liberty Legion defended America`s shores from foreign and domestic enemies during World War II

The Liberty Project is a group of super-powered juvenile delinquents who were recruited by Wayne Linnier turn atone for their criminal past. They given an option: Serve hard time, or serve their country.

The Liberty Snots are a group of teenage SPB's that make their home in Tranquility.

The heads of the Golden Boughs Retirement Facility bent on tracking, imprisoning, and brainwashing Fables into forgetting their former lives.

In fantasy fiction a lich is generally a powerful sorcerer or king who through magical rituals is able to bind it's soul in such a way that it becomes undead while still maintaining it's full intellect, magical knowledge and ability to gain even more power.

The Lieutenant Marvels are three young men from Earth-S (later Earth-5), all of whom shared the name Billy Batson.

An organization that believed a nuclear holocaust would follow the Cold War, and to that end constructed an enormous fallout shelter for wealthy clients of theirs to survive and bring about a utopian society.

Six chosen warriors of the Universal Inhumans

A group of Ivy University professors who helped Ryan Choi out on missions

The Lightning Force is the alternate version of the team Excalibur from the world Earth-597, a realm where the Nazi's won World War II.

The Lightning Lords of Nepal are a family of villains from K'un Lun who are sworn enemies of the Iron Fists past and present. They often frequent the Adventurer's Club.

The Suicide Squad of Earth 8.

The Lilim are the thousands of children of Lilith, but of all them, perhaps the most famed is Mazikeen, the consort of Lucifer Morningstar.

Supernatural villains

A variety of female demons and night terrors of Jewish folklore known for drinking blood, eating children, attacking pregnant women and raping men in their sleep. This includes Estrie, Succubi and various storm demons all said to be daughters of Lilith or even Lilith herself.

A mini version of the Justice League from an alternate dimension.

Little people that inhabit the island of Lilliput in Gulliver's Travels. In Fables they live in the area of the Farm known as Smalltown.

Transtemporal dimension lifeforms.

Most of the inhabitants of Limbo are demons.

The criminal gang of Mon*Star.

Supervillain team of twin sisters.

They are a team of heroes who try to make sure time remains free of paradoxes.

A group of anthropomorphic Lion-Aliens on Hawkworld, it is suggested the Hawkman villain, Lionmane is from there too.

An alien race of lion headed humanoids who live on Ligra.

A family in the Fables universe who embody different literary devices and who for the most part are seen as enemies to the Fables.

A group of European scientist who spliced their DNA with that of dogs.

A team of kids dressed up as mystery men, who stopped a crime boss. After their initial success they continued to fight crime as a team. Later, Little Miss Redhead would also join their group.

Agents of the Cult of the Unwritten Book obsessed with inflicting pain to others.

Little Terrors are the Terror Titans equivalent in the world of Tiny Titans. They like hot nachos, and attend Sidekick City Preschool with the Little Tiny Titans. Ravager often babysits them.

The youngest & smallest members of the Tiny Titans. The Little Tiny Titans often causes problems for their babysitters.

A group of children who originally lived in the McGreg Home for Illegitimate, Wayward, and Possibly Homicidal Youth. They eventually banded together to escape the McGreg Home and befriended The Goon, becoming his scouts in the process.

The Little Wise Guys are a gang of four kids who live together in a barn. They often aided the crime fighting efforts of the Golden Age Daredevil.

Androids, "Livewires", are secret project created by the Government for the destruction of other secret projects.

An evil organization of lizared-themed super-villians run by King Lizard. They are responsible for the deaths of Dupli-Kate and Shrinking Ray. They bear a resemblance to Hydra and the Serpent Society.

Lizard/Humanoid hybrids.