The Scourge

During the Mount Usu duel, "the Voice", a manifestation of the enemy, cited "the Scourge. Harvey. Hermes. The bargain of the mask" to Michael Brookhaven in illustration of the principle that "the coolest character is the one whose face you never get to see", echoing Brookhaven's statement that the coolest character always won, and thus implying that their own victory in the War was inevitable. (PROSE: )

Behind the scenes
's 1987 novel featured a mysterious threat referred to as simply "the Scourge" for most of the book, which had devastated the magical "Seerkind", hunting them down nearly to extinction. The Scourge is eventually introduced in the back half of the book, but although several possibilities are presented about its nature (including the angel Uriel, an alien entity which was the source of the legend, or an unrelated entity, whether alien or even stranger, which learned about the myth of Uriel from the minds of humans and has come to believe it to be the truth), but none are ever confirmed.

Notably, Weaveworld featured a minor appearance by Barker's demonic creations the, who are referenced elsewhere in The Book of the War (as the "Eremites"), presented as real beings within the Faction Paradox universe.