Stats per Bastards and Bloodlines from Green Ronin Publishing.
The Golgothan half-vampire tends to come into existence after being haunted by its own soul. Since nothing can enter or leave the plane, a soul has nowhere to go, until it is recycled -- reborn into a new body. In the mean time, the years and discorporeality take their toll, and many souls are driven mad, seeking out their bodies or becoming mindless spectral beasts. Some of those who seek their bodies are confronted with the inescapable fact that they have become vampires, and the souls hang around to attempt to break the spell. After long exposure, the vampire grows more mortal, absorbing traces of the soul the body once bore.