The Concept of Evil and Darkness

http://www.unknowncountry.com/dreamland/evil-it-can-be-defeated,
http://www.monstropedia.org/index.php?title=Rakshasa

http://paranormal-intersection.blogspot.ca/2013/03/mysterious-humanoids-with-eyes-of-black.html

http://en.wikipedia.org/wiki/Prince_of_Darkness

http://therabbitportal.blogspot.ca/2009/12/the-monster-etc.html