Once inside someone, even demons can't detect them. They can possess someone for around 65 - 330 minutes. Stage one: This stage lasts 5 - 30 minutes. The host becomes quiet, sad, and introverted. Stage two: This stage can last 1 - 5 hours. The host will fall to the ground. Immediately after, the host's body except for their head will become paralyzed. The host may also have a panic attack or simply give up on life, and just lay there, accepting death. This stage is only dangerous if the host was already soon to die of hunger, dehydration, hypothermia, ect. with nobody around to help them. After this stage, the spirit leaves, and the host is back to normal.
Danger: 3/10 Activity (how active the spirit is): 7/10 conspicuousness (how obvious it is when someone is possessed): 8/10 Pain during possession: 0/10