Hello! So I had this idea in my mind "What if..." Sons of Svanir took the image of a Valkyrie and made a hard-ass killer that did whatever he was told. He's priority would be to eliminate anyone who is a threat against Sons of Svanir. And that would be the Heroes of Tyria.
There goes a rumour that this killer is roaming around in Shiverpeak Mountains. Some people have even said that they have seen him close to Njordstead, carrying a dead body on his shoulder at night. No one is sure for certain that this "humanoid" is even real or just a myth. But there is no doubt that people have disappeared in the days and nights.
SO That's just a small backstory for this fella. I'm not spelling perfect in english but I try my best atleast. Cheers!