Spirits

Spirit monsters are usually monsters created entirely from corrupted souls. These can be murder or ritual victims. Often enough, Spirit monsters will have a following, misled naive people worshipping them and offering sacrifices to these creatures they deem Gods. Spirit monsters are one of the few creatures able to create Magic-Made monsters. They themselves are not always violent. But will typically have a following of aggressive cultists that they will manipulate to attack, defend and even feed off of.