User blog comment:EmpyreanSmoke/Supernatural Q&A/@comment-27006668-20151024171404/@comment-24834479-20151025173532

1. As in his personality, most likely. 2. The salt destroyed the vessel beyond repair. 3. They would receive their powers again. 4. He was not powerful enough to smite a white eyed demon. 5. White eyed demons were made stronger than common angels. 6. Cain, Lilith, Alastair/Azazel 7. Not that I know of. 8. The colt. 9. Possibly for the scyth, but not for the other ones. 10. What beings are immune to the colt are unknown. 11. Both possibly. The scythe more likely than the gun. 12. Most likely not. 13. History is a mystery 14. No 15. Their power level is pretty close together, but most likely Zachariah.