User blog comment:ImperiexSeed/The weakest Supernatural creature, what is it?/@comment-2170335-20120210225301/@comment-1509826-20120210234030

Yes it is, only the colt, the knife and angels can kill them, the rest can just slow, hurt or send them back to hell, there is also the fact, that the main agonist for five seasons has been a demon, to consider (one and two, Azazel, Three and Four, Lilith, six Cormley (with raphiel and eve))