User blog comment:Noctosphere/We finally get a Human as a big bad. Your thought?/@comment-34326521-20160530005205

I think it was predictable. Case in point: I literally predicted this. The writers decided to take a page from the season 7 book and went with a type of being that had already been shown (monsters in season 7, humans in season 12), made it stand out from the rest of its kind (Leviathans in 7, Men of Letters in 12), and gave it a personal vendetta against the protagonists (Sam and Dean are "competent enough to warrant exterminating", and they also unleashed nearly every evil thing since season 7). They mixed the guy who thought Sam was the antichrist with Henriksen, mixed in some Men of Letters, and boom: main villain.