I found something interesting on IMDb which sparked my imagination and wanted to share with you guys.
Cain appears very different and the thread thought could Cain be a Dark Angel? Could he be in a class all by himself, immortal?
Could it be possible about Cain being a Dark Angel. It actually could be highly possible and all the demons just for some reason can’t really tell maybe cause the true form is a bit similar when looking at it. Also I read on the Supernatural wiki citing the Essential Supernatural Alistair was possibly the first Demon ever created. So Lucifer created a Dark Angel but since the person did it out of love it for whatever reason didn’t piss God off enough as turning Lilith into a Demon and that’s what got Lucy locked up in that fiery pit. So there could be a season on Dark Angels…..(there’s a pun somewhere in this) and explore their nature and maybe even angel-demon hybrids and hybrids of other beings.
Some are thinking that Cain could be like Sam Hain, (only with his own body) a very special type of demon, he’s probably meant to be Lucifer’s champion, just as Alistair was Lucifer’s torturer, Azazel was Lucifer’s General, Sam Hain was probably something like Lucifer’s beast master and Lilith was Lucifer’s jail breaker.
Could this be leading to Dean becoming a Dark Angel? One of a kind, a unique specimen, who could live for ever? Is this the burden that Cain was pushing on Dean that he was warning Dean about? Cain was most pushy and insistent that Dean was made aware of those bitter consequences that there were repercussions down the line.
Any thoughts on this un-heard of breed of Dark Angel, has anything been mentioned in the past about this mysterious creature maybe lurking in our midst wanting to break free and into our mythology. Is it something we want Dean to become. If Dean’s path was meant to be angelic all along would this surprise any of us considering he’s Michael’s true vessel? Sam this season has also had connections with an angel could this be perfect symmetry? I find I still can’t get what Cain said out of my head, and that he wouldn’t have said this lightly, without a care in the world. He meant what he said, and Dean took it hook, line and sinker. So what else do you think Cain meant. Who is Cain really? Could he too be lying like Gadreel did? He shows a thick skin that can’t easily be broken but so easily gave his curse away with a literal warning. But what key does that warning really hold.