Darkness nested in the woman’s heart
And her husband found that the Dark Face lingered there
So he took her to a pit of fire
And he cast her in.
-Twenty-Ninth Explanation, Sun’s Sword 5:8, The Book of Two Faces
The God has two faces, and wears two masks.
One is a bright mask, shining with light, shining like the sun’s gold; it is the Gold Mask.
The other is a dark mask, blackened with shadows, black like the night. That is the Dark Mask.
-First Explanation, Priest’s Teachings 1:2, The Book of Two Faces
During a storm the PCs come upon a little boy that plays in the rain. Upon further inspection they discover that he has one eye and a long tongue lolling in its mouth. Spit dripping. It is a demon from beyond that can access our realm during storms, it eats all heads that are not its own, living and dead.