Shin Malphur, he created a group of wanna be dredgens, his greatest enemy, so he could keep a close eye on them. Drifter was/is one of them. When the Dredgens go bad and follow the darkness, Shin hunts them down and kills them, as he did with Callum Sol. Drifter says he acts like he owns the Golden Gun, even though all hunters have acess to it. The purpose of Malfeseance is that Drifter wanted to create a bunch of this weapons, because they can kill him for good.