Abnormal mostly referred as 'Mutants' or 'Evolved Beings' is a name given to individuals such as humans who have been affected by the Gate Builders' technology, the Genesis Artifacts. These Abnormals stand out from the rest of their original species by their enhanced abilities and genetic mutations of their evolutionary development.
Many scientists have been trying to understand how the Gate Builders' technology could have such an effect to all forms of life, believing them as varied examples of that species' future evolution. Some regard them as being blessed by the gods in superstition, others however regard them as freaks and monsters. Humans on Earth have been experimenting with such artifacts on their own kind for government projects during the Zon Ghoul War which in fact the zon Ghouls using them for a 'slave army'.