Princess D'Nadia's realm, purchaser of one of the ninth floor's newly claimed Faction Wars slots.
In a broadcast after the floor's battle, Carl announces that both open Faction Wars positions have been claimed. One belongs to Princess D'Nadia's Prism Kingdom; the other goes to the newly formed Princess Posse.
One of the outside powers buying its way into the coming Faction Wars.
Also appears in books you've already read — spoiler-safe to their endings: