A friendly Ghost can be found in the grassy plains Bentini Heights around Treno (before getting the Invincible), or the grassy plains of Bohden Heights outside South Gate (after getting the Invincible). It asks for an Ore and will reward the player 10 AP if given one.
Ghost from Final Fantasy IX appears as an enemy in Final Fantasy Record Keeper.
[view·edit·purge]A ghost is the soul or spirit of a deceased person or animal that can appear, in visible form or other manifestation, to the living. Ghosts are generally described as solitary essences that haunt particular locations, objects, or people they were associated with in life, though stories of phantom armies, ghost trains, phantom ships, and even ghost animals have also been recounted.