Of course, most of what you know about the Devil comes from the Bible. Written by God's lot. You must admit that they have a vested interest.
Have you heard the Devils side of the story? The constant pain he lives in. The people he has to mix with, being given great powers by God and then being berated for using them. That has to suck. No wonder he is pissed off and mixes it up a bit. He is a bit like a French farmer in that respect. They don't take no ****.
If you want to get his side of the story then I suggest you have a read of I, Lucifer. A fantastic and funny read.
http://www.amazon.com/I-Lucifer-Fina.../dp/0802140149