War of Agartha

The War of Agartha was a conflict fought before time between the Keepers and their brethren, of whom were corrupted by the dark Aether.

The uncorrupted Keepers won the war, banishing the corrupted Keepers into the dark Aether. These Keepers (with the Shadowman being amongst them) would, with time, evolve in to the monstrous, demonic creatures known as the Apothicons.