Alien race native to the planet Luphom.

Lurmen were a diminutive, pacifistic lemuroid species.

Lex Luthor Family

Independant contractors working for Checkmate. Their leader is Maxwell Coffin. They wear high-tech flying armor.

Shaw O'Shananhan's former gang of lions.

A group of robots modelled after Machine Man and Jocasta who are part of the Descendant movement.

Carnivorous inhabitants of the Desert of Dead Skin.

Decoys used by Madame Masque. They have a short-life expectancy.

The Madmen are a gang of misfits who wear brightly colored costumes.

A super-secret government task force, led by Amanda Von Doom. Their vision statement is simple: Kill Mad Scientists.

Mad Twins were the men who lived in Atlantis's poverty-stricken outer realm. They were later a rebel leaders.

Phobius, Helio, and Gronk were gathered by Maelstrom to help him in his revenge against the Inhumans and the Deviants.

One of the most notorious crime syndicates in the world.

An international crime syndicate including three of New York's most prominent criminal families, the Silvermanes, the Hammerheads and the Nefarias.

Loki's assembled band of Asgardian powerhouses. They rallied to protect the world from the evil that is the Serpent.

Authoritarian Organization with complete authority over Gotham in the Future State event.

The judges, jurors, and advocates of the universe.

Subterranean rock/magma humanoids, that assisted Doc Seismic in battling the Guardians of the Globe.

A mutant supremacy group at Empire State University that follows the teachings of Magneto.

Mercenaries working for Moses Magnum.

Magnum Munitions is a weapons company. The owner is the notorious Moses Magnum.

Group dedicated to remaking Earth in their own image and turning everyone into technological life-forms like themselves. Override is their leader, and knowledgeable in quantum physics. Baud has speed, stealth, and boldness. Download is the teleported. Scareware is the team's muscle. And Output is the mechanic/inventor.

Majesdanians are an alien race hailing from Majesdane. They can absorb solar radiation and convert it into a unique energy which can be used both offensively and defensively.

When The Maker recreated The Ultimate Universe he established a secret council comprising the leaders of each sovereign territory. Together they manipulated global affairs.

A race of gigantic dragon like aliens with from the planet Maklu-IV. They are thought to be responsible for the dragon myths in both ancient China and medieval England.

Crab-Like Race of Atlanteans

Genetically created stormtroppers of Caliginous.

First intelligent life form in the universe the Maltusians is an extint race which eventually evolved into the Guardians of the Universe, Controllers and Zamarons.

Primitive men from the Savage Land who are led by Maa-Gor.

Ninja Man-Bat's created by Talia Al Ghul and used to enforce the League of Assassins.

The Manchester Gods are entities of Otherworld representing the industrialized North of Britain.

The Warriors are a football team from Manchester, AL.

During the Mandalorian Wars, this group sought to rule the Mandalorian people. They are responsible for the deaths of Jango Fett's family and Jaster Mereel.

Mandalorian Protectors were a group of Mandalorian Supercommandos formed by Mandalore the Resurrector. They are now led by the later Mandalore, Boba Fett.

The Mandalorians—known in Mando'a as the Mando'ade, or "Children of Mandalore"—were a nomadic group of clan-based people consisting of members from multiple species and multiple genders, all bound by a common culture.

Mandarins army of prisoners assembeled to take down Tony Stark and declare war upon the world. All of whom had either fought Stark in the past or were the newest incarnations of those who had. All of them had been upgraded and implanted with a bomb by Ezekiel Stane.

Costumed guests of the Time in A Bottle pub in London.

A Stark Designed battle suit built for S.H.I.E.L.D. The plans for the Mark I and II have been known to fall into the wrong hands however and are used by villains as well as government agents.

Race of anthropophagic dwarfs who have been terrorizing one of Tibetan villages.