Jacen
I don't wanna go anywhere near Zachariah. But if we can set him up right, I don't see why they wouldn't want to dish out whatever aggression they might have against him. If I hadn't seen Dean in over hundreds of years and found out he had been hiding from me the whole time, I'd be pretty pissed too.
I don't know enough about their family to determine if he'd actually get smited on the spot for it, though.