Xhandrosor is an ancient Ossifector from the age of myth. He is also one of the personal ossifectors of Mortarch of Necropolis. He was sent to this realm to serve Zradan and oversee the mining of emberstone and refinement of Mortkhat. Xhandrosor is an amalgamation of six souls of powerful necromancers from the age of myth and his dominant soul was that of Xharek the Bonelord who was a loyal master necromancer to Nagash who died with his master in the Battle of Burning Skies. He was one of the ossifectors that worked with Arkhan the Black and his Null-myriad to create the first batch of Mortkhat during the start of the Soul Wars.