Shadowbox is a member of an extremist mutant group called the Fanatix that target a man named J. Jerome Knox, a wealthy individual who was devoted to better relations between mutants and humans. Fanatix would crash his fundraising event and come into conflict with Bishop and his Xavier Security Enforcers- the XSE.
Creation
Shadowbox was created by John Ostrander and Steve Epting in 1998 and first appeared in Bishop: XSE # 1.
Powers & Abilities
Shadowbox has the ability to meld with the shadows and teleport herself through them.