Xavier Remington
All three evil entities are technically the same supernatural being of darkness who is said to be the primary progenitor of all evil in our Omniverse. However, Satan isnt the original Prince Of Darkness. That title falls to the very personification of evil that came into existence at the same time as our Omniverse. Long before the Devil ever existed. The greatest entity of evil is known as The Darkness. Thankfully, they are currently locked away...
Demons
It rarely happens but yes its possible for a Demon to possess a Vampire. The reason this phenomenon is rare lies in the truth that most demons generally look upon vampires as being way beneath them. Demons usually consider vampires other than First Generation as being nothing more than useful idiots at best. Of course, some such as the Second Generation Dracula impress them. Theres also the fact that the human souls of vampires are already...
Ghost Huntersalwayscarry a digital thermometer as a general guide to gauge paranormal activity around them. Believe it or not the average temperature of a haunted house, or any other similar structure is a respectable 66.6F. Even if the furnace is running at full steam or its the middle of a summer heat wave. This temperature usually reflects a state of ghostly presence yet in a mostly dormant state. They occupy the house and are siphoning just...