Board Thread:Speculation House/@comment-71.17.68.254-20130907025506/@comment-4830106-20130911160119

Teravor wrote: They don't have souls. Ergo, chances are they are a hive-mind. Perhaps, but they also seem to differentiate in intelligence. For example, the Nevermore and Deathstalker were smarter than the Beowolves or Ursa. What I think is that there is a central guiding mind, but Grimm monsters do retain a capacity of individual thought. That, or there's a hierarchy within the Grim collective--the tougher monsters have more independence, so they're smarter as well.

@BenRG that sounds a lot like "Smoke" theory.