Spirits need physical bodies, so they possess humans without a second thought; some, if they need to hide, will also possess animals. Those possessed become Spirit-Ridden, or simply Ridden. In the First Tongue, they are known as Hithimu. There are two types of possession, being Urged or being Claimed. * Spirit-Urged (Hithisu) - A spirit nudges the host's desires and impulses like a backseat driver. * Spirit-Claimed (Duguthim) - victims of outright possession and control. The spirit directs every movement of its vessel, and its more direct control can affect its host’s very flesh.