Chaos was the main villain of the book.
Its minions caused mayhem in the empire, driving its citizens to small worlds by the end of the third volume.
Assisted by the undead from the uncharted land, they caused the downfall of the empire and took the fat piece of land for themselves.
The uncharted land was mentioned only a few times in the book because its plot focused mainly on the war between the two sides. As it was a largely unexplored area and only a few things were mentioned about it in the book, Roy was totally clueless as to what was going on there.
It can be said that it was because of Damien that he came to understand it better and found out that there existed a kingdom of Outlaws in the uncharted land, outlaws that were thirsty for their blood and wanted to destroy the empire.
