Board Thread:Speculation House/@comment-33544229-20171230011921

So according to Doctor Oobleck the underground city was destroyed by subterranean grimm, which makes me wonder "What grimm specifically" Now I think it's obvious that most were likely grimm we've yet to see, but I like to think there's a couple grimm we do currently know of that might have been involved. My first guess are creeps, In Grimm Eclipse one of their abilities is to dig underground and dive back out, which leads me to believe they're a subterranean species. Another suspect I think is the death stalkers, the very first one we see is found in a cave, and similar to the creeps, in Grimm Eclipse it is shown to be able to burrow, granted it was one of Merlot's mutant grimm that did this though it is unconfirmed whether this was an ability gained from the mutation. 