Dark Priest

Encyclopedia Entry:
A type of succubus that is a zealous adherent of “the fallen god.”  A human woman who was attacked by a “fallen priest” or “fallen angel” and became corrupted, changing into a demon. They dress in the garb of a holy woman who serves god, but they’re exceedingly lustful on the inside, and they follow the teachings of the fallen god. Giving in to desire, they attack humans to pursue pleasure.

"Prayers dedicated to the Fallen God are performed by having sex with men. They show the Fallen God how obscenely they've fallen, and how big a desire of men they've received."

Their task is to spread the teachings of “the fallen god,” and corrupt humans. By taking on a human form, they slip into human settlements and begin propagation of their religion. They especially aggressively assault the most austere people, probably to thoroughly instill into their bodies a sense of pleasure and the doctrine of their religion. Their joy is to fill men with desire, and receive the desire with their own bodies. When they find a man they like, they devote themselves to him with religious zeal, giving pleasure, having intercourse, and corrupting him. Also, women attacked by them and corrupted are changed into “dark priests” the same as them. The new “dark priests” have already been thoroughly tainted by the teachings of “the fallen god.” And following the teachings, they will probably give into desire, seeking pleasure and men.

As written above, it is their duty to propagate their religion, but since they are fallen themselves, when they find a man they like, they give precedence to their own desire, and abandon their duty. They take their man back with them and stay holed-up in Pandemonium (reference the dark angel page). Once they are holed-up there they forget all about their duties. With time stopped, they probably give in to unending desire and continue to have sex with their men for eternity.