The Earthen are a synthesized race engineered by the Creators, functioning as one of the seed races in the initial population of the world designated as Azeroth.  The Earthen were created to aid the Creators' efforts in shaping the deep regions of this world.$B$BThey are a modification of the standard subterranean being matrix used on other worlds that the Creators have seeded.  The construction of this prototype race created various anomalies that were observed after initial synthesis.