[1] Those who're Phi Phong are beginning of black magic and can't control of subjects in themselves, or force of planted a species.
It's called "Wan Phi Phong" (ว่านผีโพง; lit: "ghost herb"), which has a white, hot flavor and make a light in the dark like luminous woodlouse.
[1][2] In the day, Phi Phong appears as a normal person, but at night turns into a ghost.
Typically, Phi Phong don't harm humans unless threatened, whereby Phi Phong will throw banana stalks cut from the widow's water carrying pole over the roof of the victim's house.
[4] Phi Phong appears in horror anthology film Lhorn (หลอน) in 2003.