Crast

Crast were a race of crustaceans from Pria. They had a symbiotic relationship with the Priapulins. For unknown reasons, it seems that Crast reproduction is triigered by being digested by a Priapulin. The Crast were willing to act as Priapulin food if the Priapulins care for their children.

Appearances

 * Rogue Planet