User blog comment:EmpyreanSmoke/Weaknesses/@comment-3481504-20151001032508

Listen up everyone,

Cas said in 7x23 that Leviathan can literally just chomp the whole aquarium, and even archangels are apart of the aquarium. And if Leviathan can eat/kill archangels, then they can easily kill all angels, all demons (except maybe Knights), all monsters, and all deities (except God). Also, Dick said if he wasn't busy, he'd wipe out all of demonkind, meaning Leviathan at the very least, can take out an entire species. To put it very bluntly, they can eat/kill anything any manner of creature besides God, Death, the Darkness, the other Horsemen, Oberon and maybe Knights. And if they later introduce something stronger than the Leviathan, we'll address it then, until then, Levis are easily top-dog.