The Hospital Hauntings

The Angel of Death.

The Angel of Death is a supernatural being that is often appearance in places where there is many deaths. It is seen before a human dies. Many people often mistaken it to be a Grim Reaper.

In the Episode "The Hospital Hauntings", various stories in a United States hospital where many patients and workers had reported encountering the Angel of Death.

Despite it's demonic appearance, It is not an actually an evil creature, but instead a neutral being that brings the souls of the dying to the afterlife.