Poltergeists
By magically extending their reach, they push and pull objects to create havoc and destroy their surroundings. They seek to do undo the work of others, and to fight against the living. Very fast, very strong, very hard to destroy.

Vampires
By sucking the energy, vitality, and motivation from the living, they demoralize them. They leave people feeling miserable or unstable.

Demons
Can read the weaknesses of people around them. Can see weak points in structures, or in organizations. Constantly query the environment around them to learn how to sow discord.

Wisps
Broadcast illusions of things to tempt, distract, confuse, or mislead the living. Always trying to trap people using their own interests and desires. Enthralling.