User blog comment:Tommy,Klaus&Kol2012+/spn questions/@comment-4011543-20120201214843

I reckon Death and the Lord can fully kill Leviathans, as the Lord is their creator and Death can kill anything. I think that Eve created the Pagan gods, as when they die they end up in Purgatory, the afterlife of monsters, and all monsters were said to have been created by Eve. I reckon Eve, alongside the Lord and Death, is a natural part of the Universe, in that she, the Lord and Death came into existence with the Big Bang. The same goes for the Hoursemen, as they symbolize natural elements and essentially to kill them one would have to kill all humans to remove Pestilence, Famine and War from the world. I reckon Botax harms Leviathans because it is not found in Purgatory, and, essentially, it is rather like the extraterrestrials in War of the Worlds being killed by a terrestrial virus. The Colt can't kill Archangels or other of the primordial creations of the Lord because they are primordial and therefore the strongest creatures ever, along with the gods. I reckon the Lord created the Leviathans because He had no idea what His creations ought to look like at that point and therefore the Leviathans were like a primal form of life before the Lord designed complicated creatures like us. I think the Leviathan Chief is rather like the real Devil in that he is far older than Lucifer and the third oldest creature, older than Michael, and the Leviathan Chief is essentially the Leader of the Leviathans because he is the Alpha and the oldest Leviathan. I think that Azazel designed the Demon-Killing Knife for Sam to use when Lucifer had fully possessed him and then gave it to Ruby with the intention of the Knife always ending up with the Winchesters (everyone knows Lucifer wanted to kill all demons as soon as humanity was extinct). So yep, I think that covers all your questions