Not to be confused with a serial killer, a mass murderer is someone who kills groups in one go rather than individuals over a period of time.

Marvel imprint featuring explicit, uncensored content such as sex, language, and violence.

A large and often humanoid shaped robot. They are usually piloted by humans manually or remotely as objects of war.

The practice in which an individual trains the mind.

A range of problems in the brain.

Mercenaries, sometimes also known as a soldiers of fortune or hired guns, are a private individuals that join a military conflict for personal profit, are otherwise outsiders to the conflict, and are not a member of any other official military.

Story inside the story. Not to be confused with the fourth wall.

In the DC Universe, metahuman is a term used to describe any human being who may have any kind of "super power". These humans had suffered a "biological variant", called the meta-gene.

A war from 1846-1848 between Mexico and the United States.

A revolution that happened in Mexico from 1910-1920.

The time period, between ancient and modern times. Many different comics are set in this time.

Milestone Media is an independent licensing company, founded in the early 1990s. Milestone's comic titles were published by DC Comics.

Military conflict (or warfare) is a genre of comics that emphasizes historical fiction during a wartime setting (particularly during and after World War II). Many of the stories focus on the extreme experiences of soldiers and their combat units under the harshest of conditions.

Mark Millar's line and universes of creator owned comics, published at Icon, Image, Dark Horse, and Top Cow.

Manipulating someone's thoughts and/or actions against their will.

Miniature versions of Marvel characters. The stories are focused on a young audience because of the childish art and the comical elements that are present in the stories.

Is a short series (predetermined number of issues) of comic books with the purpose of telling a defined story about a particular character, group or event. a.k.a. Limited Series or Maxi-Series.

Minotaur Press is a sub-division of Top Cow imprint under Image Comics.

A former imprint of DC Comics that was aimed for teenage girls. Lifespan: 2007-2008

An early, unintentional end to a pregnancy. Miscarriage is a naturally occurring event.

An age of comics which has lasted from mid-1980's to the present days.

An age of American comics which began in the mid-1980's and has been left open-ended due to disagreements over what the comic ages represent. While there are individual proposals for what the age after the Modern Age was or what the current age is, there is no solidified agreement in the way there generally is with Golden, Silver and Bronze.

Stories about the hunting, capturing and/or killing of monsters and similar creatures. This is distinct from hunting stories featuring real-world animals or stories about monsters attacking civilians.

Monsters are imaginary and/or fictitious creatures that tend to be sometimes aggressive/dangerous and usually have a unnatural appearance and/or strange abilities, although not all monsters are considered aggressive as some can be peaceful and even benevolent towards humans.

A backup feature which runs in the Morning Glories series. It features a similar trend to other comics (for instance Lil'Batman) but frames some of the series darker moments in a more lighthearted manner.

A holiday which celebrates motherhood.

Motorcycle sports.

The art of climbing a mountain.

Any comic book that expands on a movie with new material not present in the original movie, this also includes prequels, sequels and spin-offs.

M-Tech was a Marvel imprint that spun-off from the X-men arc, "Rage Against the Machine." The titles focused on hi-tech heroes and consisted of three unrelated books: Warlock, X-51, and Deathlok.

Also known as Dissociative Identity Disorder (DID) is when you experience intense changes in your identity. You may feel like different aspects (states) of your identity are in control of your behavior and thoughts at different times. When a character has more than one personality. In real life this is a very serious condition. It is often used in fiction.

The crime of deliberately killing a person.

Stories specifically about the making of music, either through singing or the playing of an instrument.

Mutant Growth Hormone (MGH) is a drug created from the genetic material of superhumans. MGH temporarily grants powers to humans, or enhances the power of superhumans or mutants.