Board Thread:Episode Discussion/@comment-410526-20160130155211/@comment-410526-20160131153817

Master Moridin wrote: seeyouguyslater, of ridiculous amounts Grimm art fame, thought it was signifying that Grimm are at their base amorphous creatures. (Which is definitely lent credence by the Dragon Grimm's concept art)

Maybe the baby Grimm are born from like, super tiny puddles or pools of this amorphous stuff deep in the wilds? I love that person's art, it's so great.

And that sounds like a very plausible theory. Maybe the puddles sort of condense out when negative emotions are felt nearby?