User blog comment:ImperiexSeed/The oldest being, archangel or leviathan?/@comment-5120709-20120529162257/@comment-3481504-20120531215838

Honestly, I dunno. I don't watch/do Dragon Ball Z. Though, for the time I did, Gray Buu seemed powerful.

AND in "Free To Be You And Me", when Dean aksed if capturing Raphael would be like "to catch a avalanche in a butterfly net", and Cas said no, "harder".