The Shadow Seven is a group trained master assassins who, like Colin King, were students under the undead monk. Each of whom in the order he taught, which had the backing of an infamous powerful dark mystic, were altered via powerful magics as apart of their tuition in the killing arts. This also serves to aid them in their particular fields of crime and other duplicitous pursuits.
Each of the monks students have a mastery of the physical self that enables them a host of phenomenal if not supernatural capabilities. Likewise their teacher had often erased any traces of their individual memories in order to cover his tracks, leaving blanks in some of his acolytes minds only for them to reassert itself at a later date.
Members of the Shadow Seven