Re: Devil,Lucifer,Fallen Angel etc.
The last I heard Devil wore prada and rode Toyota Prado. He like to pray and prey as well. He is like a faithful carnivore.
On a serious note: There is no such thing as Devil or God. Good or Bad. The world created a higher power as a metaphor for worshiping the forces of fury that is - Nature, beyond it, Universe. Look at Greek, Egyptian, Hindu, heck, most of polytheism in this world and also monotheism in some way is based as a metaphor.
I also agree to certain extent what Southpaw says, except for his theory of 'genetics'. No body is a criminal by genes. Look at Australia, for example. Its the circumstances and also to a point poverty and lack of opportunities that create actions, that are perceived to be bad at any given point of time - as the society functions.
The devil is a metaphor for choices resulting in bad actions. That harms others. Thoughts do not make a devil, actions do though.