User blog comment:ImperiexSeed/The oldest being, archangel or leviathan?/@comment-216.171.28.112-20120506015744/@comment-173.77.119.115-20120506033224

I think paper probably is man.

Physically, man is the weskest, but we always find ways to beat/outsmart God's other creations.

Like how Sam/Dean/Bobby figured out, chopping off Levaithans' heads and using Borax incapacitates them.