Lol I skipped like every episode (never watched a full season) and went to the finale of season 9 and was mind blown.

This doesn't mean that Dean is going bad.
Cain was bad, decided he doesn't want to live like that anymore and died. But he came back and wasn't killing anymore. (Cain didn't have demon eyes)
So Imo. Dean will get to chose what he wants. But since Crowley is with him there, he might try and lure him into the "darkside", so to speak.
Plus Dean has already been to hell. He's been tortured and has tortured many souls himself. I'm quite confident he wont be doing bad to good ppl in season 10.

As Crowley was saying, all is expected...

Just finished the finale.
................................................I don't know.... Dean the demon..... Deanmon.

Wow Dean's a demon + Sam's going to give his soul for dean to be alive when dean is already alive as a demon...

that's kind of fucked up on crowley's part to hide information about the blade.

and Metatron should be killed otherwise who knows what plans he has up his sleeve still.

Dean tho...damn, he was turning into a demon and losing his humanity with the blade?

Frostmourne hungers.

well I already know whats going to happen, they will cure dean since we have seen a cure. Question is....will dean become good? because if he is good well I mean he will just be like sam cure me, but maybe due to the mark it may be a little different?

I wonder if dean will be as powerful as cain?

Whose Cain? He seems like a legend based on what Crowley said. I skipped to the end so can someone tell me

It's a spin on the origin mythology.

Lucifer wanted Abel. Cain didn't want Abel to get tempted by Lucifer. So Cain made a deal with Lucifer to protect Abel's soul. Part of the deal was that he had to kill his own brother. In turn, Lucifer now has Cain as a demon. The first blade (the bone) was the weapon Cain slew Abel with.

Still surprised death hasnt intervened....

since when are angels walking among us part of the natural order he wants to protect? lol

god I miss death and lucifer

yea death's the most powerful character in the series...i wonder why they never showed him after idk the last time they showed him