First introduced in 1942, these were the forebears to DC's Elseworlds imprint, as they often dealt with non-canonical stories. Many of these stories dealt with Superman marrying Lois Lane.
Immortality
Beyond the reach of death, outside of time, unable to change; these are the basic aspects of immortality as it is shown throughout the comic book industry.
Impact Comics
A short-lived 90's Imprint of DC Comics used for publishing the licensed Archie Comics heroes for an all-ages audience.
Imprisonment
To be held in captivity in, for example, a prison.
Indigenous People
Groups of people who live outside of civilization and are often stereotypically depicted as savages. In comics they can play the roles as villains' minions or spiritual guides for heroes.
Industrial Espionage
Infection
Infection occurs when viruses, bacteria, or other microbes enter your body and begin to multiply.
Infinite Frontier
DC Soft Relaunch Post Dark Knights Death Metal
Infinity Formula
The Infinity Formula is an experimental drug in the Marvel Universe that slows the aging process.
Infinity Warps
A collection of mini-series focused on the mashed-up "warped" heroes from the Infinity Wars mini-series.
InStockTrades Exclusive Variant Cover
Interactive Reader Decisions
Sometimes the readers of comic book are given direct influence on the outcome of events.
Interlac
Interlac is the intergalactic language used commonly throughout the United Planets by the 30th Century. It was put to great use by Keith Giffen and Paul Levitz starting with their Legion of Super-Heroes run.
International Connecting Variant Cover
Series of six connecting variant covers released as part of The War of the Realms event.
Invisibility
Iraq War
War between Iraq and a United States-led coalition from 2003-2011.
Jack Kirby 100
Collection of one-shot specials celebrating Jack Kirby's works in DC Comics.
Jedi
An ancient monastic, academic, meritocratic and paramilitary organization whose origin dates back to c. 25,000 BBY.
Jeet Kune Do
An eclectic and hybrid style fighting founded by Bruce Lee
Jim Henson Company
Jinxworld
Joe's Comics
Joe's Comics is an imprint of Image Comics by J. Michael Straczynski's Studio JMS and was originally published as an imprint of Top Cow Productions.
Jousting
Sport played by knights to test their skills.
Judo
A form of martial arts created in Japan.
Kaboom!
A sub division of Boom! Studios.
Karate
A Japanese martial art, the full-name is karatedō.
Karate
Martial arts.
Kherubim Technology
Kherubim technology is some of the most advanced technology in the Wildstorm Universe.
Kickboxing
Boxing with kicking included.
Kicked in the Nads Shot
When someone uses a swift kick into another persons testicles causing great pain which usually immobilizes him.
Kidnapping
KidRobot Labbit Variant Series
Kirby Krackle
An art technique used mainly to illustrate energy.
Kirkmanverse
The Kirkmanverse includes all the Image characters created by Robert Kirkman plus characters from the Larsenverse (Erik Larsen's Savage Dragon world) and Shadowhawk books.
Kitty's Fairy Tale
A reality described by Kitty Pryde in a fairytale, unaware that it was real.
Knife Throwing
Knife throwing is an art, sport, combat skill, or variously an entertainment technique, involving an artist skilled in the art of throwing knives, the weapons thrown, and a target.
Knights
The medieval warriors who upheld chivalry across Europe.
Konami
Video game company that licensed its properties for comics like Metal Gear Solid.
Korean War
A war on the Korean Peninsula from 1950 to 1953 that ended with an armistice, not a peace treaty, and split the peninsula into the nations of North Korea and South Korea. More than two million died in the war, including 34,000 Americans.
Kosovo War
A war from 1998-1999. Part of the Yugoslav Wars.
Kung Fu
Chinese martial arts.
Labor Day
A holiday in the United States which is celebrated on the first Monday of September. It celebrates the American labor movement.
Lacrosse
Lacrosse is a North American team sport played with Lacrosse sticks and a ball.
Las Vegas Retailer Exclusive Variant Cover
Law Enforcement
Legacy Virus
The legacy virus was a biological weapon engineered and released by the madman Stryfe for the purpose of killing all mutants. The plague lasted for years and killed many mutants and a few humans.
Legend (Dark Horse)
Early imprint at Dark Horse used for creator-owned material.