While checking the wiki page about Arkk (the asura from fractals storyline) I found that Potion of Slaying Scarlet’s Armies works on him and he’s considered to be a part of Scarlet’s Alliance.
He was also described as being the mastermind in one of Shattered Observatory achievements.
He also seems to be interested in Scarlet’s work.(Nightmate Fractal)
He also wields the cannon of Horrik ( who was an Aetherblade) during the final fight against him.
Arkk also has a debt toward the Inquest. And Scarlet worked with the Inquest.
What do you guys think? Is Arkk’s story over?
I’ll link the wiki page here.