I'd love to play this game. I've seen several CC games start but they rarely get very far.
I have several different ideas for this game, haven't settled on any just yet. They are, in no particular order.
A Mesmerist using the Spiritwalker archetype. This character would have been an apparent stillborn, with it's mother dying during labour and the midwife having to cut it out of it's dead mother. If allowed I'd love to make this one a Daemon Spawn Tiefling but that isn't a must.
An Unchained Rogue using the Phantom Thief and Relic Raider archetypes. This one would work best as Skinwalker of the Bloodmarked type (there are several families active in Caliphas, Ustalav's capital). It would have been part of a family gang that stole/recovered relics and similar things and then sold them to the highest bidder. It is the only survivor after the whole family got killed by a curse placed on a relic.
A Ranger using the Guild Breaker archetype with a particular hatred of the Whispering Way. It's mother would have been a secret cultist of the Way and would have killed it's father and little sister in a grotesque ritual to help her own transcendence into undeath. It failed as the character interrupted her and she simply died as she botched the ritual suicide that was involved. Since then the character would have been working to figure out what exactly had transpired and why.