A couple of minor spelling errors in this, and the last paragraph doesn’t really feel like it fits with the rest of the piece. It’s a monologue that suddenly shifts drastically. If anything, that last paragraph seems like it would work better as the beginning of a new sequel. I love this concept, though; it has the makings of an epic.

Thanks, fixed as many of the errors as I can find.
The last, frantic plea is what One was originally, from behind the mask. It will be examined in more detail in a later section.

I recognize the Dungeons and Dragons jargon, nicely done, you write what’s in a players mind as they play, sometimes in a solitary room online or in a group. Is that what you’re going for?

There’s some minor corrections needed:

-echhos to echos

Line 3 is fine in structure but line 5 should read the same way. Either remove the comma or move the sentence around:

As I command armies of my lessers to conquest beyond the sight of the stars, the Inheritors of Agony are at my beck and call.

Or,

The Inheritors of Agony are at my beck and call as I command armies of my lessers to conquest beyond the sight of the stars.

-is it children of Pain or Children of Pain?, those are two completely different things, there’s no prequel or sequel to refer to.

I don’t know if I could read an entire novel like this, but it’s a great way to describe a characters frame of mind.

I’m not deleting my comments, K25ff posted while I was writing mine, take what you can.

I do go a bit crazy with the commas and it is children of Pain.
Dungeons and Dragons jargon? I didn’t put in any intentionally…