There are some who are in darkness
And the others are in light
And you see the ones in brightness
Those in darkness drop from sight

A once successful businessman turned psychotic, lethal knife wielding assassin, Mack the Knife was recruited by after gaining notoriety in several US cities for taking out his former business rivals that had caused his own once successful business to go bankrupt. Mack justifies his murders for the fact that his rivals only put him out of business due to their illegal operations with Mafioso and gangsters. He stated that the only difference between a gangster and a businessman is that the gangster is "often a coward".

He praises efficiency, organization, and even keeps books. Mack the Knife's skills are seemingly unmatched in the world, and landed him in a spot of Cobra's newest, most violent special ops group to date, The Rat Pack.