Quote Originally Posted by Iceforge View Post
Must say that part killed me :)

How demons and angels and such are "IRL" highly depends on which religion/culture you draw your inspiration from, but to answer your indirect question, the devils of DnD are kinda fallen angels, demons are another breed all together, and the fight between angels and the demons is what lead to the devils falling.
The Erinyes is the only devil I know that is a fallen angel.