User blog comment:McGillicuddy/Interesting Season 11 Spoiler :D/@comment-26855072-20151015184019/@comment-6344309-20151015233250

I like that they gave her a human form, for some reason to me, it just makes sense. Though I'll admit, back when they showed Purgatory in season 8, I was a little disappointed that we didn't get to see the Leviathan's true forms.

I also just want to say, they promised that Sam and Dean wouldn't be effected by anything like Sam's demon blood addiction or Dean and the Mark of Cain, but Sam almost became a Rabid and Dean is attached to Amara.