Help with a Nightshade themed character.

[Oxylepy]

I'm usually trying to pull off a Nightshade themed character via creating my own Sorcerer bloodline, but I think it would be better to come here and stick within the actual Pathfinder rules (not homebrew) for it. So I come to you for suggestions.

Within the standard rules, how would you represent a Nightshade as a PC? What if it could be a Gestalt character, how would you represent it then?

[Distant Scholar]

A nightshade? As in, one of several powerful undead monsters? Or do you mean something else?

[Oxylepy]

As in the Undead Subtype, yes. Not necessarily any particular one, but more their concept and theme