Talk:Non-Playable Character/@comment-77.98.238.169-20180824162546/@comment-45.56.46.26-20180824181317

It seems they were able to extensively customize the entire tomb, even to the extent of adding three full floors and redesigning several of the existing floors. They also changed it from a simultaneous raid type to a linear dungeon delve.

So it would be weird if they couldn't at least have some choice of what kinds of POPs spawn. That said, all the Floors that have unique POPs were part of the dungeon in the first place, or connected with the original tomb themed Floor. So maybe they can only select from the types of POPs that came with the dungeon. Since undead POPs have low/zero maintenance costs, they expanded the tomb Floor to three Floors and keep it full of the most enemies.