Now, For what Lliluk found about the history of these demons....
Note, this may or may not be true in the storyline. this is what the demons believe in.
In the beginning, There were various gods. These gods were Oppressors, Destroying and creating as they pleased, without a single care for the lives of any intelligent creature. However, there were some gods who realized the implications of what they were doing, and realized how significant these mortals were, being able to create culture, kingdoms, weapons, society, language, and a whole lot of other things without divine help... What could they do if the divine did, in fact, assist them? But the other gods were too busy bringing ruin to them... Thus, for the sake of science, a grand rebellion started.
The leader of this rebellion was alorme smokeconflict, now known as the "God of Chaos", who led a legion of their creations, along with the other rebellious gods, into war. They lost, and were cast into the underworld to keep them in line, and their power was locked behind layers of adamantine, a metal which suppresses the powers of these gods, limiting it to hell. This was done primarily by angels, who are unaffected by it. Now, the imprisoned gods weren't just going to sit there. They brought upon new races, All sorts of demons... And adventually, the succubi and incubi. year 0, The adamantine layer is breached by dwarves, but the power of this metal blocked off most demons, Save for a few weaker one, and the succubi and incubi. The war against the oppressive deities continues.
Now, You are here, In their second attempt to get a foothold, leading the charge.
Oh, and, we had some pretty good trades recently, and you have your throne room and stuff.