Cyfrin Järvinen, former warlock under the Aether demon king, Asteroth.
As the conduit for Asteroth's power, Cyfrin was the only link between the Aether and natural world. Not in control of his own body, he fruitlessly struggled with the demon in his mind. When finally his mortal form's final moment came, his last instinct was to whisper his thanks to the one whose sword had severed his heart, for freeing him and the world from Asteroth's dark presence.
Now a shade, wandering in the endless Void between worlds, it seems there is no rest for a weary soul once bound.