Ghoul

A Ghoul is a low class demon that is created by possessing human corpses. They have also been known to be created by possessing the corpses of dead animals.

Overview.
As they possess corpses, Ghouls have various appearances. Depending on the type of body they possess. In Japan, where cremation is the most common form of buriel, Ghouls mostly appear as rotting dogs. They all share several charateristics in common, they cannot speak, they have slow movements, and they do not feast on humans. They are still agressive to them. In addition to this, Ghouls have several weaknesses that can be exploited, by the knowledgeable individual. They can be vanquished by a fatal verse, which lies within the gospel of St. John. They can also be lethally be harmed by holy silver weapons, or powerful firearms.

Powers and Abilities.
Ghouls are a species that do not seem to have any special ability, other than taking over a host. With an exception of demonic resitance to harm, other than the fatal verse, or leathal silver or deadly firearm.