A
comic book published by
Marvel Comics until the late
90s. Originally, it stared the five
original X-Men pretending to be
humans specializing in the
neutralization and
capture of dangerous
mutants. After a while, they dropped the mutant-hunter act and
revealed themselves as mutants themselves. They had helped save
New York City and were
heroes for a few years.
After a while, the five members rejoined the X-Men and the team name passed on to a new group -- Havok, Polaris, Multiple Man, Quicksilver, Wolfsbane, and Strong Guy -- who were employed by the United States Government to protect the nation and generally be poster boys for mutants everywhere. Peter David created and wrote this team for a few years, doing a spectacular job until he got fed up with the constant deluge of editorially-imposed crossovers and left the book. The title went downhill from there, finally passing into Marvel limbo while Havok was transported to an alternate universe as "Mutant X". The storywriting still hasn't improved.