The Directorate has long sought to produce the perfect assassin clone, but their efforts have been incessantly stymied by the Sovereign. He has made it a matter of personal interest to ensure that all Ark vaults containing pertinent data to this research fall squarely under his direct supervision, denying the Directorate access to chameleonic strand sequences and certain personality traits, which it has sought for so long. They have instead been forced to adapt and improvise with those strands they already possess: agility, strength, aggression and some limited biomechanical functions.