I’m going to guess this is a being chained to the shadowlands by the titans or whatnot - or perhaps a void lord who’s power grows with the consumption of souls,
Regardless, Sylvanas wants his spot, is my guess. Why be the lunch queen when Arthas was killed? Sylvanas wants invulnerability - insurance against death - and in her case, the best way to do that is to take it out of the picture. She’ll try to take the Jailor’s place by freeing him - but I doubt this move will go well for her.
The jailor, I suspect, is the ultimate enemy spoken of in the three sisters comic - a character feared by even the void - and I believe that is the case because it embodies what both the void and light fear the most - nothing.
Nonexistance. A world of neither light nor shadow, where nothing exists at all. An empty, barren reality, devoid of life, and subsequently, devoid of death. The jailor would break the cycle, ending everything.
Including sylvanas, though I’m sure she’s unaware of that. In her mad panic to reach her goal, spurred on in confidence by her newfound power, her rash decision-making will reach new heights…atop which, she will fall.
The Jailor isn’t “nothing” and doesn’t represent nothing. That’s the Void Lords by definition.
No, the Jailor represents what’s worse than nothing. The Jailor represents suffering such that “nothing” is preferable. If your deeds throughout mortality are such that it would have been better that you’d never existed in the first place, the Maw is (or at least it should be, I’m sick of these wimpy, wholly ineffective hells that gruff badasses can just grizzle their way through without consequence) the place where you come to recognize this fact.
According to the Edge of Night short story, the Maw is a place of suffering such that it ground Arthas, the greatest evil ever spawned of Azeroth, down to a whimpering child. It doesn’t matter how dark and edgy your backstory is, or how powerful you become - if you end up here it will make you lament everything you’d ever done.
That is what the Jailor represents. Pain and punishment such to make even the darkest of souls repent for their deeds.
Woah that is infinitely better than my idea in all honesty.
Now I’m bloody excited, Goshdarnit.
You should be a writer for WoW!!