Shadow-Jinn

The Shadow-Jinn were the jinn that merged with Khayel, becoming an entity plagued with near-uncontrollable urges to devour, to return everything to the primal essence from which it came.

The Quest
The Shadow-jinn group were called the Quest and lived in a citadel not in the mortal realm. The first of them was Israk. They had a contact with the mortal realm, Lurza, also known as the Quest. 

Known Shadow-Jinn

 * Israk