Human mutants (or Homo sapiens superior) are a common variety of super-powered humans in the Marvel Comics universe. In Marvel's prime universe (Earth-616), mutants were created by a star-faring race of humanoid aliens called the "Celestials". Approximately one million years ago, these beings came to Earth and performed various genetic tests and experiments on Earth's highest lifeforms, the nascent human being. To test the versatility of human genes they implanted strands of a dormant DNA complex which would one day permit uncanny mutations of the enormous scope in humanity.The abilities granted by the presence of this X-Gene can be minuscule to god-like, as evidenced by the great variety of powers exhibited by the many well known mutants of Earth. For example, many of the X-Men, and former members of the Brotherhood of Mutants are quite powerful, while others possess seemingly trivial abilities.
Throughout history, mutants have existed in all walks of life and have come in all shapes and sizes. As well as the extraordinary powers they may possess, several mutants, while technically human, may not appear physically human at all. Mutants have frequently been subjected to prejudice by normal humans over time and have been met with distrust, jealousy, hatred and violence. Such extreme examples of mutant racism have even led to potentially world-shaking conflicts between mutants and humans, but thus far the Earth has enjoyed relative peace largely due to its large global community of super-powered heroes which includes many single mutant heroes and mutant groups such as the X-Men.
For the purposes of this wiki, not all mutant characters from the Marvel universe will be included. Inclusion of a mutant character depends largely on the character's abilities, appearance and alignment (most "monstrous" characters are typically villainous). All Omega-level mutants may be considered "monsters" due to the devastating nature of their powers. Omega-class mutants possess abilities that can be potentially world-shattering, such as Jean Grey-Summers aka Phoenix, whose telekinetic power can deconstruct matter at the atomic level and has even resulted in the destruction of entire planets.