Ever since the emergence of mutantkind took the Marvel Universe by storm, the X-Men have stood as their world's foremost mutant heroes. In the years that followed their debut, the X-Men have built a reputation as stalwart defenders of not just the world's mutants, but of the world as a whole — even if much of it hates and fears them in equal measure.
Source：https://www.cbr.com/dark-xmen-members-history-survival-marvel-comics/
