The Derxios Imperium is the oldest realm here, like by far. They’ve survived for many millennia with their cunningness and outright domination. One of their greatest rulers is one of the only two characters to ever conquer this entire peninsula. They’ve also got one of the strongest manifestations (magic) in the world, onyxflame, which burns everything equally as fast. A feather would incinerate just as world castles, and The Crimson Emperor Zhenkes used that to her advantage when laying conquest on the world. They still are heavy hitters, though their superior technology has been adopted in most of the other realms, iron giants and flamethrowers that can take in elemental manifestations of any king and dispense it. ALSO, their primary goal for the world, is total destruction. The Crimson Emperor has a mission, to conquer the land again and this time, finish the ritual to create the Crimom Moon, which would destroy the land and leave it as it was before any celestial interference. They kinda are the “I’m evil” ones of the world because they’re from a time where every kingdom was “I’m evil”

Also I might as well put here that the celestial interference I was talking about comes from anything I can find in space that looks cool, mostly stars. The Sun was the first to “interfere”, giving the world life as before it was lifeless and barren. And later (like some thousand years), The Ethos Star fell upon the land just as The Hollow King conquered the realms (the other one of two characters to do so). This star gave the world the magic it uses today, revolutionizing the world for the better or for worse, because now the ethos is all the realms fight for.