Hell Knight

The best question I've ever been asked is how something like Hell can have enough structure for there to be Knights. If Hell is a howling, incandescent chaos of tortured souls suffering for eternity, who is there to swear fealty to? What can be offered in return for such service? And what is there for Knights to do?
The problem most people have is that they don't realise the full extent of Hell. Each religion has its own version, its own rules on who gets sent there, and what happens to them when they arrive. Many philosophers have created visions of Hell as well, though they may not have realised what they've done, and every human capable of imagination can fashion a Hell of their own. Hell is vast, and there is room for almost everything in it.
The Greeks had visions of Hell as the abode of the dead, with a supreme ruler; the Italians, after Dante, had visions of Hell as a multi-circled domain wherein people were punished according to their sins. Typically, only the Christian religions are desperate to roast people alive and torture them indiscriminately, and though those pockets of damnation are growing here and there, they're considered by most residents of Hell to be a little gauche and underdeveloped. They're the third-world countries of Hell.
This leaves plenty of space of human to instate the feudal society they seem to default to, so there are hierarchies and rankings, class systems and levels of equality in many regions of Hell, and some of those rulers are strong enough to be able to grant titles that are either meaningful or respected in other regions as well. Not all Knights come from such places, but I do. The proof that I am a Knight are the tattoos on my wrists and the way they coil around each other when brought together. The ruler I swore allegiance to is Caledon, who commands Escabon, La Greche, the Maigre Strait and the Citadel of Romance. His plans for expansion are well known, and likely to succeed.
As for what I do, I recruit for Caledon. Not for his armies -- there are enough souls in Hell to fight the wars -- but for his administration. I head-hunt, in the corporate sense. I find people with the necessary skills for the positions that are open and persuade them to join.
Hell is not timeless, as many people think, but time passes at different rates depending on where you are. Mostly time is dense and heavy, and the lower you go the faster time passes, the heavier it weighs on the souls there. But there are places where time reverses and flows backwards, and places where it reveals its fractal nature, and with knowledge a Hell Knight can use them to enter the world where he pleases.
Hell can be both entered and left, so long as you have the right mindset and know what you're looking for. The Greeks had no problem with the living visiting Hell and leaving again, so many of the doorways look like temple entrances and allow passage in both directions. Christians see Hell as a final destination and so their doorways are one-way only and can't be subverted: it's part of the structure of hell. But they make it easy to get in: any door can be turned into a gateway to hell if there's enough Christians nearby.
And so I am a Hell Knight, and I have recruitment to attend to.