Demons are a mysterious paranormal species whom very little is known about overall. Many different types of demons with variations between them apparently exist. Some demons such as Yvonne Bradshaw's father are capable of living on Earth for a time and even of having children with mortals, while other demonic entities such as the Men with Sticks and Rope cannot leave the Other Side for long and thus usually only project themselves on Earth through doors and electronic equipment. One common characteristic between demons seems to be that all of them have very malicious and sadistic tendencies by nature: the gatekeepers of the Other Side are known to be very brutal and sometimes even sadistic with ghosts, the Devil exists to create chaos and spread apocalyptic corruption, and the demon who co