Zayl
From Diablo Wiki
Zayl is Necromancer from Richard A. Knaak novels "The Kingdom of Shadow" and "Moon of the Spider". He carries the undead skull of Humbart Wessel in his pouch for company and for aid in times of need, along with an ivory dagger crafted from Trag'Oul sealed to Zayl's soul.
Zayl was first introduced in "The Kingdom of Shadow" as a support role or secondary character. Though there is a significant amount of character development throughout the novel, he is often seen from the point of view of the protagonist.
In the sequel "Moon of the Spider (novel)" Zayl is the main character, and much more information about his character is released from his own perspective. Zayl does not seem to have a personal connection to Trag'Oul, as Mendeln in the Sin War Trilogy. He is also shown to have a compassionate/emotional side behind his cold exterior.
