- "Mutation: it is the key to our evolution. It has enabled us to evolve from a single-celled organism into the dominant species on the planet. This process is slow, and normally taking thousands and thousands of years. But every few hundred millennia, evolution leaps forward."
- ―Jean Grey[src]
Mutants, also known as Homo superior, are individuals who possess a genetic trait called an "X-Gene" that allows them to naturally develop superhuman powers and abilities and sometimes affecting their appearance.
Mutant are born with a genetic trait called X-Gene, which alters the physiological structure of the individual granting him/her superhuman powers and abilities, some of these powers the result of alteration of their appearence. These alterations, called mutation, is seemingly random and its rare (but not impossible) for two mutants to share the same mutation.
History of Mutantkind
Though the exact nature of mutation remains a mystery it's known that at least two mutants existed by the 1800s, James Howlett and Victor Creed whom fought in important wars of American history. By the time of World War II, mutants became a more widespread phenomenon though humanity at large continued ignorant of their existance.
It was not until 1960s when the existance of mutantkind was revealed during the Cuba Missile Crisis, what orchestrated by Sebastian Shaw who sought to destroy baseline humans so that mutants could rule the Earth, with Shaw as their leader. His plans were thwarted by a group of mutant misfits, whom used their unique gifts to prevent a nuclear war. However their heroic actions exposed mutants to the world in irrevocable ways.
In 2003 Colonel William Stryker, Jr. sought to rid the world of mutantkind by using a combination of his son Jason and Charles Xavier's powers with Cerebro to mentally kill all mutants in the world. His plan nearly backfired at him and not only nearly caused homo sapiens' extermination but also a full-out war between mutants and humans.
A "Cure" to mutation
The billionaire businessman Warren Worthington II sought to cure his son of his "alignment" and used his corporation to create a mutant cure, using a mutant child as source. The cure was supposed to be used to cure mutants and make them human again but it was also used as a weapon by USA military in case dangerous mutants posed a threat to lives.
Learning of this mutant supremacist Magneto lead an army to the headquarters of Worthington Labs, in San Francisco, to destroy it before it was used to exterminate mutantkind.