Illdaeron

Illdaeron The Usurper is the God of Evil and a member of the Pantheon of Stars. Once the leader of Alnora's Valarien, He turned against the Light-Mother, transforming himself and his followers into Demons through dark, forbidden magics. From his dark realm of Acherus, he has launched numerous attacks on the Pantheon and Sillania, including an event known as The Calamity where he succeeded in taking over the planet for some time.

Though his influence in the mortal world has since diminished, his influence can still be seen in numerous places. For one, Demons still roam the world and are formidable adversaries, taking up residence in Astral ruins and abandoned settlements. In Zalnora, Illdaeron is considered a patron god to a malicious cult known as The Acheron.

Acherus
Acherus is Illdaeron's domain, a horrific plane of jagged rocks and obsidian citadels bathed in light from molten blue lava. Souls who are killed by demonic energy are ripped from the Soul-Nexus in Last Bastion, and dragged down into the pits of Acherus to serve as slaves or fuel for the machine.

In addition to Illdaeron, there are a group of Demon Lords subservient to him who are often known to make pacts with mortals for power in exchange for their souls, or the souls of others. These are:

- Jaraxxus, Lord of Brimstone - The Demon Lord most in tune with fire, he grants mortals with powerful fire magics unseen anywhere else.

- Thelnazzar, Lord of Souls - This demon lord manipulates the souls which enter Acherus, and is the one repsonsible for the creation of Necromancy and The Undead.

- Marezia, Lady of Shadow - She commands the power of darkness, and is able to siphon the power from individuals and corrupt others.