They are the spirits of non-human species. They can occasionally come to real world, although they mainly stay in the afterlife. Spirits also have a close relationship with spiritspeakers and spiritshifters.
Mekahuman spirits (whether Mekahuman, Mekahuman Descendent, or Mekahuman GrandDescendent) have a different afterlife, called the Fallen's Home. They can be summoned to the real world by the Meka
