Probably undead. I'll need to see the origins, if there are multiple for undead, to pick one. Name and personality to be determined.
Alignment possibly good; usually I play mostly good, but a little Machiavellian (where the greater good can justify theft and less than generous quest choices, etc). With the plot of D:OS 2, though, it might be interesting to oppose the Divine Order (and Black Ring) on principle, rather than purely self preservation, so that would require being principled.
