Ghost

Name: Ghost
Normal Life Expectancy: Immortal
Background: In traditional belief and fiction, a ghost (sometimes known as a spectre (British English) or specter (American English), phantom, apparition or spook) is the soul or spirit of a dead person or animal that can appear, in visible form or other manifestation, to the living. Descriptions of the apparition of ghosts vary widely from an invisible presence to translucent or barely visible wispy shapes, to realistic, lifelike visions. The deliberate attempt to contact the spirit of a deceased person is known as necromancy, or in spiritism as a séance.

The belief in manifestations of the spirits of the dead is widespread, dating back to animism or ancestor worship in pre-literate cultures. Certain religious practices—funeral rites, exorcisms, and some practices of spiritualism and ritual magic—are specifically designed to rest the spirits of the dead. 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.
Special Abilities: Ghosts are nearly immune to physical damage. They have the ability to possess the living, should said human not have defenses against such. An "experienced" Ghost can create a solid body, use abilities it knew when it was alive, and re-arrange it's body structure to take on any form they please.
Disadvantages: Ghosts usually become weak around churches, crosses, bibles and anything holy. An experienced Priest can exorcize a Ghost to the afterlife, and weaker Ghosts can be taken control of by experienced Necromancers. Experienced Ghosts can create resistances against these disadvantages.
Special Customs: Well obviously to become a Ghost a person has to die, and have a strong enough soul with the will to keep going after the physical body dies.

Ghost: