Originally Posted by
Jokubas
I intentionally left my last post to be based on art and models we actually have, but to indulge the speculation a bit more, I want to draw some other conclusions about what I said about the gold and silver cosmetics.
I wonder if the Jailer was always meant to be, well, the Jailer, and not the Arbiter. Something that's never addressed in the version of the story we have is who watched over the Maw before Zovaal was sent there, or why the Maw isn't just a prison or wasteland, but is conspicuously fragmented. My theory is that Zovaal was originally the Eternal One of the Maw, the Jailer of the Damned. He kept the rest of the Shadowlands safe from evil in prisons of golden spires.
At some point, however, he still turned evil. Perhaps it was even more like Sargeras, or the original Sargeras. Being the warden of such absolutely, terrifyingly evil souls destroyed Zovaal existentially, so he sought out the Sepulcher of the First Ones in order to remake reality without the potential for such evil. With the realms of the Eternal Ones reflecting their nature, as Zovaal turned bad, the gold faded and the Maw became desolate.
When his siblings learned about his desperate plan, like the Pantheon they turned against him to stop him. A war broke out, and the Maw was shattered. Ultimately, Zovaal lost and was chained in his own realm, then they sealed the place off and threw away the key.