A peaceful race whose main planet is I'Than Prime

Criminal syndicate from the Star-Wars Universe

A jackalope is a North american mythical creature.

Jack Doe, who is a detective, and his wife Jill Doe, who thinks she is a detective.

Gang led by Jack Horner in 1883.

The Jade Dragons were a pair of siblings that inherited their power from their father. They were both vigilantes that worked together.

The Jade Phantoms are a New York City street gang. They were used as pawns between opposing mafia bosses for the run of New York in the absence of the Franco Bertinelli being killed.

Savage killers, secret weapon of the Nazis.

A travelling circus to which Nightcrawler once belonged.

A team of Metahumans inmates of the prison known as The Enclave.

A shadow organization responsible for the events at Ravencroft Asylum

The Japan Self-Defense Forces are the unified military forces of Japan that were established after the end of the post–World War II Allied occupation of Japan.

Jean Grey School For Higher Learning was created by Wolverine in the aftermath of the X-Men's Schism. He named it after the first female X-Man and long lost love, Jean Grey. The academy is also known as "Grey's School for Gifted Youngsters".

The Je'daii Order is an ancient order of Force users who would focus on maintaining the balance between the dark and light sides of the Force. This order would help the making of the foundation of the Jedi Order years later.

The ancient Jedi serve as the keepers of order and peace in the galaxy, as well as sworn guardians of the Republic.

These Jedi Knights were charged with guarding the Jedi Temple on Coruscant. After Order 66 most of the guards were killed. One of the few that survived joined the Emperor and became the Grand Inquisitor.

A band of assassins, consisting of several groups of people with jelly-based powers.

Gang of Vampires.

The team features in the Hellgate London comics, and are the last hope for mankind!

An army of clones created in Vatican City

A futuristic family that lived in Orbit City in an apartment complex that was in the sky.

Undead from chinese folklore

The Jihad is a team of super-powered terrorists that call their home in the nation of Quarac.

A group of kids that admire Jimmy Olsen in the Pre-Crisis universe.

Elemental spirits from Mesopotamian and Islamic mythology.

Native South American tribe

The JLAxis is a Nazi version of the Justice League of America from Earth-10

Justice League Queer

JLX are a team of metamutants in the Amalgam universe that defected from the Judgment League: Avengers after they unjustly tried Aquamariner for crimes against humanity. JLX is short for "Justice League of X-Men".

The Johnny Apollo Gang is just a couple of kids with dreams of being big wigs in a new mob.

Joker's answer to Batman Incorporated. He recruited followers from different parts of the world.

Joker Squad was the nickname of the Company C, Battalion 9 of the 407th Division. It served both the Fel Empire and the Sith Empire in the Legacy Era

Followers of the Clown Prince of Crime