Demon Lord Hauberk signed a secret treaty with Agailla Flurry, who is known as one of the greatest mages in the history, but after that treaty had been discovered by Demon Lord Helgasercle, the body of Hauberk was ripped into pieces and those pieces were sealed away and scattered across the world. Nevertheless, Hauberk still influences his servants and dreams of his resurrection and return.
This NPC can be found in Sutatis Trade Route (3)
and Demon Prison District 1 (1)
and Demon Prison District 4 (1)
and Aqueduct Bridge Area (1)