During the Age of Enthronement, Nangu was a Kellid warlord responsible for much devastation while alive. In one village he slaughtered, he encountered a necromancer who told him about the Whispering Way. Nangu killed the man. However, after further thought, he started to become intrigued by the possibility of immortality. During his raids, Nangu began seeking out members of the Whispering Way, hoping to learn their secrets, but he complained that he had trouble hearing the cultists due to his bad hearing and their inexplicable refusal to speak up.
The exact series of events that happened next is unclear, but it is supposed that Nangu’s efforts to forcefully interrogate members of the Whispering Way earned their ire. It would seem that one of the undead cultists ahd attempted to kill Nangu in his sleep, but the effort was botched because, a few nights later, Nangu awakened as a vampire--this first of curse bestowed upon him.
Being skilled a leading destructive forces, the undead Nangu was recruited into the Army of the Whispering Tyrant. When Whispering Tyrant's rose to power in the 33rd century AR, Nangu served in the forces under the vampire lord Malyas, who was entrusted by Tar-Baphon with the the conquest of northern Ustalav. North of the Senir River, Nangu aided Malyas and his band of deathless raiders in scourging the land. Countless thousands fell to his army's relentless march, whole towns were scoured and burned to ashes, and every burial place bolstered the undead war machine. Malyas subdued the north and then raised a black fortress at the loneliest edge of the Keldenwood, naming it Kronquist.
Nangu continued serving under Malyas through the reign of the Whispering Tyrant and aided Malyas in the shadow war against the undead who opposed Tar-Baphon during the massacres remembered by vampirekind as the Blood Drought.
When the Shining Crusade pushed into Ustalav in the 39th century AR, Nangu fought alongside Malyas’ armies in the north and followed Malyas to Castle Kronquist when the vampiric forces were forced into retreat. While the Shining Crusade besieged the castle, Nangu laid low within its impregnable walls. As Malyas spend most of his time sleeping within the castle, Nangu took charge of the rotting army, spending most of his time fighting boredom.
In 4719 AR, following a cataclysmic explosion that sundered the prison of the Whispering Tyrant, Nangu was called to Gallowspire to help with the undead’s necromantic ritual. While serving in the forces of the Whispering Tyrant, Nangu encountered a witch. In an effort to weaken the undead warrior and, perhaps, even instill within him some compassion that might save her life, the witch bestowed upon Nangu a second curse--the curse of mortality.
Despite the sudden onset of humanity, Nangu nevertheless promptly killed the witch. As a result, Nangu was unable to learn anything more about the curse or its nature. Looting the witch’s body, which included her wayfinder, Nangu tried to return to the undead forces. However, his return was not well-accepted. The undead turned on him and Nangu fled. Uncertain what to do, he took the wayfinder to the Pathfinder Society, who took him in. He now tries to find someone who knows the witch, asking questions of other agents and asking anyone who may recognize her wayfinder in the hope of getting his curse removed.
