User blog comment:ImperiexSeed/The oldest being, archangel or leviathan?/@comment-31.53.226.53-20120607165416/@comment-184.77.255.73-20120611214902

Yeah, no. You've got absolutely no proof that Leviathans are evil; hell, they're like Galactus. Galactus also chows down on innocents' planets but that doesn't make him evil, same goes for the big-mouths.

As for Cas, he was A-OK before Lucifer wrecked his punk ass. Cas only became a semi-vegetable after Lucifer was done with him. :I

Lucifer is the 4th strongest being in all of Creation and nigh-omniscient -- give him some credit.

P.S. Leviathans do feel emotions. e.g. anger, contempt, happiness.