Our current use of the term "demon" is to denote a malignant spirit, and comes to us primarily form New Testament writers. However, there is still uncertainty as to whether or not demons are considered to be distinct and separate from the Devil and his fallen angels.
Demonology - A Comprehensive Guide
This Link is pretty vague
http://www.djmcadam.com/demons.htm
Each world religion or tradition seems to have its own idea of what is considered evil. In some cases, these ideas are similiar if not identical, whereas in other cases, these ideas are almost as complete opposites. When you begin to look within religions, you find many, many interpretations of what evil is and how it came to be in the world. Religions that have an omnipotent God, such as Judaism and Christianity, have some of the most elaborate constructions for the existence of evil, while religions such as Hinduism tend to have gods and goddesses with both positive and negative aspects. Therefore, my definition of the term "demon" on this page will be something that has been considered a malevolent spiritual being, power, or principle in one of the belief systems of a world religion. I realize that some of the "demons" on my page can also be considered gods or mythological beings, but I've chosen those I found to demonstrate the trickster archetype or have been presented as possessing "evil" traits in a predominent belief system.
Demonology - A Gallery of Demons
Unsure will have to go back when I have more time
http://www.deliriumsrealm.com/delirium/ ... demons.asp
Demonic/Diabolical Research is a very dangerous and physically demanding field. Because of this, only a select few people can handle what is encountered, felt and the repercussions of your actions. We are not talking only about taking pictures or evp of this phenomena but actual physical intervention with a Deceitful, Sly and Evil Entity. The demonic like it's anominity and because of this, it is harder to investigate than other kinds of phenomena. Sometimes these cases reveal nothing while you are there or until the very end when the Evil becomes so contained that it explodes into vast amounts of activity and all hell breaks out! I do not suggest ANYONE try dealing with the demonic/diabolical since it could cost you personal injury, possession or even death. You are dealing with something not of this reality and it needs to be handled in a such a manner not to harm the investigators and most important, the people living with it! After all, we go home and the client has to stay and live with it!
Delaware Valley Demonology Research
You got me on this one???? Ghost Busters?
http://www.demonologyresearch.com/DVDR/default.htm