The Tome of Lore:  Table of Contents

Onyxus

Onyxus, a vast, shadowy realm hidden deep within the blackest reaches of the Nevernal , is said to be the home of Igtheon , the demon lord after which the second of Sryth's great ages ( The Age of Igtheon ) takes its name.

According to the scant legends that describe Onyxus, the realm is also inhabited by seven lesser demon lords -- the vile servants of Igtheon.