Board Thread:Off Topic/@comment-27144409-20180806132759/@comment-25396609-20190617010904

We've seen two in-show grimm of that size; the Leviathan-class Grimm (whose actual name we don't know) and the Wyvern. Both are identified powerful mythical creatures from our world.

Try something more impressive like, I don't know....

Here we go, the Ceirean, a creature from Scottish Gaelic folklore; a beast said to be so massive as to feed upon seven whales. Obscure as hell with no real description attributed to it.