The overall villain in the Evil Dead franchise is a demonic force called the Kandarian Demon. It is rarely seen by human eyes and is instead represented on screen through a first-person view that zooms around until ultimately attacking someone as they scream. The Kandarian Demon, often just referred to as the "evil force," can manipulate the environment around it, but it's main goal is to turn people into Deadites. A Deadite is a person who is possessed by the power of the Kandarian Demon. Deadites aren't necessarily the reanimated dead, although they can be. Deadites retain the memories of the body they possess, and their personality is often shaped by the person they once were. In general, there are very few sure ways to safely de-possess a person once they become a full Deadite.