Okay, have good ideas for the Umbrasis cities as well as their position. They are going to be the second or third most powerful house, the main military family, have lots of great generals and warriors, could be enemies of the Espada due to the fact that they have mirroring roles for the opposing sides and thus would end up fighting each other a lot. 

The Umbraisis have been around for a long time, since the early ages of the kingdom, only becoming a major house when Yveltal was tamed and gifted them with his protection. And so the dark legacy of House Umbarisis was born. Their method of warfare is complete destruction, tearing down anything that dares stand in their way. This doesn't mean just brute strength, but strategies that are focused on crushing the enemy by any means. While the house has many heroes, it also has it's fair share of war criminals, deemed to be monsters due to their sadistic and cruel methods. But historically, the worst of them all have been the masters of Yveltal. They are said to bring death with their very presence, unkillible demons that reaped the souls of men like wheat for the harvest, who cared little for life and sought only to bring death and destruction. And of these, the worst of the worst came every 500 years. Known as 'Death-bonded' masters, these men and women are the human sacrifices chosen by Yveltal to feed his rebirth. The symbol of this dark pact being reddened eyes and hair, the more intense the change the greater the bond, and the more people have to fear from them. Even others off their family fear them, as they are seen as to be as wild and uncontrollable as stallions, the inevitability of their death meaning that they fight harder, wilder, longer, and more suicidally than any other warrior. They bear no fear of death, and thus, no fear of punishment, committing the most horrible of atrocities in the name of their king and country and doing it with a smile on their face.

Due to their expansive influence and power, they have several pieces of land across the kingdom. These would be: The mountain fort of Blackened Skyhold, the port city and naval base of Deadman's Reef, the main house of Castle Umbraisis, or Yveltal's Roost as it's sometimes referred to, and a secondary Port city of Bloodwater Cove, named for the strange phenomenon that makes the water turn blood red every so often. 

Castle Umbraisis is situated in a rather jagged, rocky area, filled with many dangerous cracks and crevices. The only place that isn't hazardous to walk through for travelers is the main road, which is heavily patrolled by Umbraisis soldiers to prevent bandits from ambushing travelers. The town of Yveltal's Roost, which surrounds the castle, is populated by either solidiers in training or farmers making a living off of the few farmable spots within the hold. More info will be put down at a later time.