Zuggtmoy, the master of the world of Mycorji, rose to prominence during the Demon Spawn War(89 GE - 269 GE). She battled all who stood in her path, whether demons or those bound by the Covenant, all of whom were fodder for her progeny - hungry fauna, black puddings, oozes, and slimes. Invading the Bal-Kriav region of Faeglor, Zuggtmoy confronted the army of Geb. In this earthen conflict, Zuggtmoy held Geb's elemental army at bay for four decades. Many of the thousands captured by Zuggtmoy's minions were ultimately consigned to the deadly mines of Siolix. The fortunate survivors of this ordeal were mutated, becoming a new Giant sub-race known as the Fomorian.
In the year 259 GE, a fomorian hero named Borri Slarek spearheaded a revolt against Zuggtmoy. Two years later, in 261 GE, wielding the legendary hammer Quake, Borri vanquished Zuggtmoy and banished her dark essence back to the depths of the Abyss, where she faced a slow and agonizing regeneration.
