Stygians usually appear as lovely, pale river nymphs, but with chillingly cold, colorless eyes. They sometimes appear with tentacles in place of legs. They enjoy drawing mortals into the deadly waters of the Underworld's rivers. When summoned to the mortal realm, they prefer watery habitats.
Stygians enjoy coaxing mortals into extreme hatred, either for a single enemy or many, or for all people. They encourage them to hold deep-seated grudges and plot the destruction of their foes.