1.This one is alittle hard to pull off, but if done write can be a very intresting plot hook.
In yoru History you where a bard, in a noble's family. You used yoru influence to smuggle goods & any thig else. The law discovered you, and usted up your organization. You had to flee from the city and hide out in the wilderness. Here you became a bard/ranger bandit, who takes leadership and rob's from people.
Eventually you become an outlaw of the Crimson Road, for an intresting combat bonus, add in Whip Lasher level's. With the right feat's you can suprise attack people, disarm them, and have bandits looting them immediately. Not to mention the vast rescources you have at yoru disposal. You could even be secretly influencing the polictial siuation of the city you were exiled from, prepairing for your return.
2. How about a Planar Champion, who was bound to the material plane, after loosing a battle with a powerful demon or devil. You need to find help and a way to remove this binding, so you can return from exile and stop this powerful demon or devil from shifting the balance in the multtiverse, even if the shift is temporary and easily fixed by others after it occurs, many countless lives will be lost during the inbalance.
3. How about a Ghostwalker, Wandering from town to town righting wrong, trying to bring some peace to his soul. The reason he drifts liek this, he accidently killed his family in some strange siuation or was maniplulated into believing it was his fault for the fall of hsi family. Now he feels compelled to helping the helpless, always moving hopeing one day to atone for his sin.
This type of character does not need to be evil, it best suits an neutral alignment, with lots of potential development. Perhaps other PC's could help him out, and influence him into becoming good, and convincing him to use his vast rescources like a Robin Hood character.