Wait a minute. Why on earth am I expected to do your homework for you? Laaaazy.
Anyway, if we're talking Christian or Hebrew angels, there's just the one God. Two possibly reasons why an angel falls traditionally: he participated in the rebellion against God or chose to be a concientious objector. This means there are three possible mindsets. 1. That of the frothing and unrepentant rebel who believes God made the first offense by giving glory to Man instead of Angel (the Luciferian concept). 2. The angel who gave his all in the Long War, has found Lucifer to be a charlatan, and now either seeks redemption (anti-hero trying to be good) or sees both Heaven and Hell as two equal factions who only want the absolute obedience of their members (Freelance mercenary. chaotic neutral) 3. The concientious objector who felt wronged because he wanted nothing to do with the rebellion. As such, he'll form his own little haven (recluse).
There, you've 4 backgrounds and character profiles with which to build on, ranging the gamit between good, neutral, pacifist, and evil.
You might want to look up the work of Joy At Home here on Hubpages, who puts forth the theory that angels are born in a neutral state and must make the choice between Heaven and Hell as they grow up. That might be different.