War-God Zakruul, was once a powerful warrior-priest of Zandalar and a member of the Zandalari Warband which sailed to Zul'Gamni following the Siege of Orgrimmar. His orders were to discipline and reform the mighty war hosts of Amani Trolls. Under the instructions of a hooded figure known as Doomsayer, he convinced the Amani to sacrifice a powerful arachnid loa to gain its powers of increased regeneration. After leading his host to the Bleeding Ziggurat, Zakruul proclaimed that the combined armies of Zul'Aman and Zandalari Sacred Spears would march north into Quel'Thalas. There, the armies would invade the thalassian province of the Emberlight. The following succession of wars would later be called the Invasion of the Emberlight where Zakruul's armies were repulsed and the counter-offensive known as the Invasion of Zul'Aman.
Zakruul later perished on the steps of the Bleeding Ziggurat at the hands of the Sunguard. His armies were then raised into undeath by the High Necromancer Akhlain of the Cult of the Bleeding Eye. This ultimate betrayal seemed to have been orchestrated by the necromantic cult to create a tremendous amount of undead bodies to be raised into undeath. It is unclear if Zakruul was also raised into undeath.