Dhuryam

The Dhuryam are a Yuuzhan Vong bioengineered lifeform that are used as world coordinators. Related and quite similar to the yammosk, except being much more bigger and powerful, these thirteen irreplaceable creatures were trained to become much more than a world coordinator: the pazhkic Yuuzhan'tar al'tirrna, or World Brain. One of them will manage the thousands of biological processes that go into terraforming and maintaining Yuuzhan'tar, the Yuuzhan Vong homeworld. Because the World Brain must be of the highest quality, it is selected through a special process called the tizo'pil Yun'tchilat: the Day of Comprehending the Will of the Gods. All thirteen dhuryams are severed from their telepathic link with their slaves by the shreeyam'tiz. When one dhuryam remains, from either killing its siblings or by some other method, it assumes direct control over Yuuzhan'tar. In Traitor, the World Brain was chosen by Jacen Solo after he killed all twelve of the other dhuryams.