User blog comment:General MGD 109/Who's the strongest demon/@comment-86.14.179.170-20151113153600

I think it was Caine and Alistair.

What I've noticed in Supernatural is that Knowledge can give you a power far higher than what should be able to beat you.

And I recall AListair stating he eagerly wanted to "Return to his Studies in Hell"

Hes the only Demon I've ever seen to go toe to toe with angels and win in pure brute force fights besides Caine and even the smiting power of anna an ARCH ANGEL he just walked into and was totally fine.

Whilst in this scene at the end "https://www.youtube.com/watch?v=RT8fzJ6i8-k" you see crowley seemingly almost dying by the energy and crowleys got all the souls and title of king of hell.

So yeah Caine and Alistair, i think Alistair was even stronger than lillith and Azazel, he just gave no shits about ruling.