User blog comment:Hallichester/The Piece of Clay/@comment-4011543-20120508194636/@comment-3481504-20120509014737

You got it all misconstrued, practically.

Season 1: villains were Azazel and Meg

Season 2: villains were Azazel and I guess Jake

Season 3: villains were Demons/Lilith

Season 4: villains were Lilith, Alastair and Ruby

Season 5: villains were Lucifer/Four Horsemen

Season 6: villains were Raphael, mostly. Then Crowley and Eve

Season 7: villains are Leviathans

Season 8: Supposedly Chaos and Nature