Kytons are a race of lawful evil outsiders native to the Plane of Shadow who feed on fear and pain. Kytons possess the following traits (unless otherwise noted in a creature's entry).

• Darkvision 60 feet.
• Regeneration (Ex) The extent of a kyton's regeneration varies according to type, and can be neutralized by good weapons, good spells, and silver weapons.

• Immunity to cold.
• Unnerving Gaze (Su) All kytons have a gaze attack that manipulates the perceptions of those who look upon them. An unnerving gaze has a range of 30 feet, and can be negated by a Will save—the exact effects caused by a particular kyton's unnerving gaze depend on the type of kyton. All kytons are immune to the unnerving gazes of other kytons. Unnerving gaze is always a mind-affecting fear effect. The save DC is Charisma-based.