Rossan Wastes

Once a useful sector on its own rights, now largely given over to Xenos races.

Ros
Feral world, once the sector capitol, now a place where feral orks and humans fight one another, whose only contact with the outside world is a small Adepta Sororitas mission, the occasional Black Ships, and passing Rogue Traders.

Gutta'z Werld
Where WAAAGH Gutta met its end with the death of its warchief, now filled with warring Orkish tribes, watched closely by members of the Ordo Xenos and Officio Assassinorum, to date four prospective war chiefs have been assassinated.

Hegane
Last true Imperial Bastion in the Rossic Wastes, it sits astride the most stable warp route into or out of the Wastes, and has been steadily fortified since the sector has been brought back into compliance. Given enough time, it will likely become a Fortress World.

Orks
Found on most worlds, as few now have the knowledge to burn out their spores, most are feral with the occasional Freebooter wandering through. Considered a major potential threat, but not an immediate one.

Eldar Corsairs
Somewhere within the Wastes is a hidden Corsair base, these Eldar Pirates strike from here deep into Imperial territory, always seeking poorly defended worlds or stations to gain human chattel.

T'au
The odd T'au are found to the Galactic North of this sector, where they've made a few base worlds which they've managed to cleanse of Orkish taint. Largely they attempt to trade with Imperial Citizens, only finding some limited success trading with Rogue Traders and Jai.