Phi-Phi

Phi-Phi
The Shan tribe of Thailand has a powerful spirit that permanently lives within the person, transforming them into witch.

The witch has many powers including shape-shifting into animals.
Phi Phu is passed down through family. Its also contagious, if you share too many meals with a phi-phi, you can be infected. Marrying outside the tribe will bring a Phi Phu into the family.

Phi Phi can send human doubles away. As long as a phi-phi obeys social expectations and laws, it will be accepted. The phi phy is unfortuanate, but not malevolent. The only way to exorcise a phi-phi from a person is that person becoming an ordained Buddhist monk.

Caballi

In the astral plane exists the Caballi a vampire being, that preys on other astral beings. It can also prey upon humans who are passing through the Astral plane and sexually driven mediums.

Similar to the Inccubus/Succubus it seeks prey who enjoy satisfying their voracious needs.

Latching on to those humans and using their bodies during sexual activity.

Caballi is created when a man dies before his natural time. His soul travels to the astral plane. He keeps his mind, intellect, and desire to interact with the world.

The Caballi will possess a psychic medium so for a little while it will have a sense of sensation.

Daylight kills the Caballi, which will end any possessions.