Oh? I was getting worried for a minute.
I've become somewhat fond of Dragon Age's idea to offer a small backstory for which to give players sort of a launching pad on ideas. Also does a great job of offering a bit of exposition on the setting. Since I'd like to reserve a little bit of mystery as to why things are the way they are... (Unlike in most post-apoc stories, the inhabitants of this world really don't
know why things have gotten the way they are.... nor in some cases, the extent. There is no lesson to be learned from the past, only that people have to make the best of what they have.
Anyways; some ideas I had;
As the last of your village, you have prepared all your life for a great journey. You live in a land untainted by the blight, a place of little danger and secluded in the far reaches of the world. But in you, all of the hopes of your people lay. When you were born, your closest peer was already fourteen years your senior. A mysterious infertility has doomed your tribe, and unless you find a new home among others, you will be the last one, doomed to live a lonely life among the memories of your family and tribe.
So back to the lands of your ancestors you must go, to the dark places they sought to escape. You know not if it is safe or what to expect. Your ancestors fled there from a great evil, and you shall soon see if it remains where they left it.
Could be either an uneducated tribal sort of character, or a highly educated character that comes from a village that has retained alot of the knowledge of the past. Or any variant of.
Another idea popped into my head was a squire to one of the last paladins, who has now gone missing. Pretty vague, but plenty of room for interpretation. Whether you want to pursue your old master, or merely honor his memory through your actions...
Another idea for a character would be a sort of infernally engineer demi-human. Mechanically, I'm not sure what it would be; probably tiefling. In some parts of the world, opportunistic demons and devils had broken into the material plane and decided to plant a big ol' flag in the world and claim it as their own. To this end, they've created a new race of human hybrids. Either as slaves or spies, these demihumans serve their dark masters. Most importantly, however... is that when a demihuman and a human (Or elf, half-elf, ect.) conceive of a child, the child will always be of the demonic sort.
So the ultimate goal of the demons and devils is to eventually turn all of the goodly races into a race that resembles themselves much more closely. Something easier to control.
Since these demihumans are not always the product of 'consentual love'... many communities will tolerate (if distrustfully) the existence of a few of them within their borders. The fear of them being spies is ever present, and of course they are almost always forbidden to mate. So there's another concept.
Either as an escaped slave or as one who has been living among the other races, distrusted and repressed.
Other idea... a wood elf who has fled his or her forest when it became too corrupted by some mysterious blight..
In short, I want to keep much of the exact details of the setting somewhat mysterious, because like I said- that's a good representation of what most people living in
But at the same time I realize that makes it a little hard to conceive of a good character concept that would fit in with the world..
Not to mention it makes it hard to decide whether the setting is interesting or not!