I'm gonna go with the Origin Path system, using the knowledge I have from playing Necromunda as a basis. As such:
* I'll be a Hive World character, Abhuman preferably (stock to be determined), originating from somwhere in the Underhive
* I'll go for Stubjack as a Birthright, as I grew up in gang life.
* I'll be a Criminal / Wanted Fugitive, found guilty on charges as diverse as theft, armed robbery, assault, murder and anything else the Arbites care to slap on me
* I'll take Press-Ganged for a Trial, fits in nicely with the concept I have in mind.
* I'll go for Pride as Motivation; I'll take the Heirloom effect, but instead of rolling on the table it might be nice if the GM comes up with something appropriate.
* I'll take the Rogue Trader Path; it fits the background I have in mind best.
So, Sil, if you see this, let me know if this fits the bill; in the meantime, I'll work out the character a bit further (more in terms of background than rules). As with most characters I do, I have a general feeling of who he is, though it might take a little time to put in words...