The mummy known as Inauhaten was once an architect, but after his rebirth he began the study of death to learn more about himself and the afterlife.
It is said that it was Inauhaten who first told the Idran of Tal'Mahe'Ra about the nature of Enoch and the identities of Aralu when they first met him in Egypt. In exchange for the protection of his body while Inauhaten was waiting for resurrection, he reported back to them the things he saw in the Underworld, including knowledge of Wraiths, Doomshades, Spectres and Deathlords. Most importantly, he spoke of a realm named Enoch, where beings called the Aralu lay entombed. He was accepted into the sect of the Tal'Mahe'Ra after he led them to the city in the Shadowlands and helped them capture Enoch for the first time.
Inauhaten is a high-ranking member of the True Black Hand and while not technically a member of the Council of Thirteen he sits on the council holding equal position with the Wazirs. It was Inauhaten who gave them the Guarded Rubrics - a distillation of necromantic praxis over the course of millennia.
According to Dirty Secrets of the Black Hand Inauhaten was most definitely an ancient mummy. However, the V20 publications were not so fast to reveal his true nature. As far as the Tal'mahe'Ra know, he could as well be a demon, a fae or even a mighty wraith. The truth is that the Hand doesn’t know exactly what they are dealing with - except for the fact that he's an ancient and undying creature, a mighty sorcerer who freely slipped between life and death.