Another storyline that bungo forgor

Shin Malphur. He killed dredgen yor with the first golden gun. He then went undercover as dredgen vale in order to hunt down the other dredgens. He also go after guardians who are corrupted by the darkness (he understands elsies argument about stasis and accepts it, he just kills the ones who let the darkness corrupt their soul and behavior). This is unlike shayra who just kills for guardians welding stasis regardless of their soul.

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.