Neshamah is the current holder of the Name Dead King. The name is Ashkaran. He is known under the name Trismegistus in Praes. 

He was born as part of the royal family of the Kingship of Sephirah. Through a complicated plan involving a plague and an invasion of the People of the Wolf he became king and used his new position to arrange the grand ritual that would lead to him becoming the Dead King.

He is immortal and may be a god. He lives in Serenity and can most likely only enter Creation when invited.