This is by far the most ill-defined category, essentially acting as the 'miscellaneous' group for creatures that don't fit into the other categories.
Most creatures in this category would be considered non-sapient. Things like the oft-mentioned Wayward Wolves would, for instance, be Monsters. However there's exceptions too - I can't think of what else I'd consider Krampus to be but a Monster. Like I said - ill-defined category. Not yet sure how best to classify this one or the commonality that brings it all together.
