A ghost is a disembodied soul of a dead creature, either a former adventurer once controlled by a poorly skilled player, or a [[Monsters|monster]] unfortunate enough to bump into an adventurer skilled enough. That basically means all ghosts are [[derived undead]], creatures without given [[attribute]]s who inherit all their stats from their former living selves.
Of course they are upset, doomed to afterlife in the Hell and longing for companions - and you should be the one to accompany them on their way. Ghosts no longer have physical bodies, they are but barely visible floating silhouettes of [[Magical Air|ectoplasm]], [[Ethereal|passing through walls]] with eerie soundlessness. Ghosts naturally cast a dull white light around them, not normally noticed unless you lack a light source.
Below you can find statistics of an example ghost.