He promised - just like he promised to kill the YED and we all know .. Dean KEEPS his promises. ;D cause' he's a badass.

I think Sam will Kill Lucifer with the Power within Himself.

I went with Dean, but My true answer is that I want the brothers to work together to do it. I think that if they do they would be showing the angels what they forgot, that even though you don't always get along or agree that brothers should stick together and work together to overcome a problem.

I don't know y Michael is even up there Dean said he will never say yes.

I know that Dean made that promise,but I really want to be Sam to kill him,I can't even explain why,but I think has to do it,to prove that he's not evil,that despite the fact that he's his true vessel,he really can change his destiny,to redeem himself,don't know if this makes sense,but I like the thought of Lucifer killed by his vessel!

I never thought about it that way ambra.Your right in a way.

@Ambra - Agreeed. I also don't lnow how to explain it I just think he has to. He needs to either do it himself or they have to do it as Brothers.

i would love to see sam kill him. that way he might get back all the trust and love from dean. if that makes sense?
also; he's struggled to not say yes and such against lucifer and all the other demon stuff that has been going on. so that he wins over lucifer, i think that will make him get a lot more respect from the fans again! :)

*raises eyebrow* I added Michael because just because Dean said he wouldn't ever say yes, doesn't mean he won't. This is Supernatural we're talking about! the twists and turns and surprises are epic. He might say yes, he might not, Sam might say yes, he might not. You never, ever know with this show. We all have our own beliefs and opinions about whether or not the boys will say yes, but really .. it COULD happen. Which is part of what I love about it.

After all that Lucifer has put him through I think Sammy should be the one to do it.

sam, dean, michael, any of them ! or castiel ! or gabriel

or hey maybe lu will accidentally fall on a sword and kill himself, hey well maybe that's not so likely...

Dean!I want him to do it..it would be dreamy!! lol!

It seems better fitted!
He is way cooler killing Demons,remember YED??
AMAZING!

I don't think either of them would be able to seeing as they're both human. I think an archangel possessing the same powers as Lucifer.

Apart of me wants Sam to because he is after all Lucifer’s vessel, and to be able to stop him himself would be a massive weight off his shoulders. But I’m gonna have to say Dean because for Dean to kill the ‘Angel’ who has been slowly destroying his brothers life would be a major act for Dean to do for his little brother, and also by saving Sammy by ridding of Lucifer, he may be able to start smiling again, he doesn’t smile enough lately 

oR ME!!!!!!!!!!!!!!!! >:(

I want to Dean and Sam fight and win this war the way their dad taught them!!!