From Fleet

Little is known about this shadowy Jannari.

Sources tell us he fly's the flag of Heavens Wrath and has constructed Mighty Structures to enforce its rule. Little has been seen of Darkknife since the destruction of a Fearsome Military blockade under his command. We can only assume he is out there...plotting his revenge...

One thing is Certain: We have not seen the last of Darkknife.