Havok replaces his alternate-self and has to fight SHIELD; introduction to the “new versions” of various characters; Mutant X takes place in an alternate reality and the only character from the “real” Marvel Universe that appears in the series is Havok. Case History: The Six, script by Howard Mackie, pencils by Tom Raney, inks by Andrew Pepoy. NOTE: The Prelude issue to this series is X-Factor #149.