The Children of Kaizen Gamorra were hundreds if not thousands of super soldiers made as his personal army.

A mutant cult of Earth-6160.

Children of the Greek titan, Thia, hellbent on finishing their mother's work of taking over the world. They are frequent foes to the New Teen Titans.

Strippers on Greek Street.

The Chosen were a group of mutants gathered by Master Zhao. Zhao felt his group were the late 21st century's successors to the X-Men. Also refered to as Master Zhao's X-Men. They fought X-Men 2099.

The Chosen are a ragtag team of teen superheroes brought together under mysterious circumstances.

The Chronos Corps are a group of time-displaced individuals Kang the Conqueror rescued from certain death at the hands of their own dying universes.

Three brothers, living in an abandoned silver mine near Monument Valley.

The Circle is a brotherhood based on Arthurian ideals and lead by Arthur, with the main purpose to defend Symkaria from Doctor Doom and Latveria.

The Circle is a council of alien leaders from various worlds.

Mysterious group of mutants living in Qurac.

A cabal who secretly run the world of 2099!

Inmates of A.R.G.U.S.

A new assemblage of villains lead by Pyg.

The Clap are the biggest band in the world and when they are not rocking, they use their free time as assassins.

A team of assassins in cloaking suits, adversaries to the Birds of Prey.

Initially believed to help them, The Clinic turned out to be antagonists towards DP7.

The Cluster is a group of traders populated by robots and led by Lord Manga Khan.

A loosely tied group of ancient artifact collectors that will even kill each other to obtain their goals .

The Colony is an elite team of soldiers trained by Colonel Jacob Kane, modeled after Batman in style, tactics and equipment, in preparation for the threat of the League of Shadows.

The initiative team of Florida.

An organization of businessmen who intended to terrorize the populace into fear-based consumption.

The Conclave was a short-lived magical group introduced in the pages of Fate that included both heroes and villains possessing mystical powers. Its existence was quite short.

The Confederates of the Curious were a team of adventurers formed in the 1920s and led by Orson Randall, a renegade Iron Fist.

A corporate sponsored team created as competition for the Justice League International and as their representatives. The team was originally led by Booster Gold however this union did not last for long.

A galactic para-military force from 31st Century.

The Constellation is a secret organization that controls super-powered agents without their knowledge.

A rival off-shoot of the Guardians of the Universe, the Controllers seek to bring peace and order to the universe through the eradication of all evil even if it costs the lives and free will of innocents.

The Cooperative are a peaceful interstellar union of many worlds including Terminus that work together following the development of unlimited energy.

After Kyle Rayner's short-lived attempt at restarting the Green Lantern Corps, the remaining former Lanterns - Anya, Garl, and Sool - remained together and formed their own group of interstellar enforcers, recruiting Sinara, Way, and Bekk H'wat into their ranks.

A top secret Black Op's unit led by Von Daggle and appointed by a rogue Guardian. They do not share similar restrictions to Green Lanterns and take on the most dangerous missions, while being virtually unknown by nearly every member of the Green Lantern Corps.

Reed Richards counterparts from many different realities that have come together to solve all problems.

Also known as the Order of Tirisfal

The Coven travels around the globe in search of a series of mystic artifacts that would change the world forever if they fell in the hands of the malevolent organization called the Pentad.

A group existing in various forms over the years whose members set aside their differences to try and prevent what they deem as extensive threats to the Earth and its people.

The Covenant of the Sword global organization, running both its legal and covert illegal operations. They oversaw the development of cybernetic technology that enabled them to create a world-wide power base. The planet’s governments both supported and detested the Covenant in equal measure.

The Brooklyn Bruisers's rivals.

Accidentally ionically charged when Wonder Man's powers surged out of control. These eight normal people would find that they, too, would gain super-powers and become the team known as The Crazy 8!

Sorcerers from various time periods determined to recreate the universe with them in power.

Four heroes with their own self-interested goals banded together with Jim Rhodes at the lead to form the Crew, a team that brought down the leader of the powerful 66 Bridges gang.

The Pequod was a whaling ship that had a crew of whalers.

The Crimebusters were a one-time group of masked vigilantes, headed by Captain Metropolis and founded in 1966, in the graphic novel Watchmen.

A mysterious team in the DCU who aim to change the world.