Possessed or Brainwashed

Heroes gets many of these. Demons or spirits goes inside the heroes bodies to control there body for hurting a friend, killing someone, wants a body period, saying or warning something to a person they knew or a different person, or kill the heroes inside there body. Now brainwash people tell them like for example that you lost a friend, home, family, family backstab you or a friend, the villain wants them as their henchman. Their a lots of ways of being possessed and being brainwashed.