Like with the skeleton, zombie, and other creature ideas...or even totem creatures. Instead of using them in battle, they are used similar to the plainsguard. They protect an area or perform some function... Like delevering a message in a quest. Though there would need to be some limit to locations they can be used and some limit as to how many could be actived at one time. Otherwises scenes would be come very cluttered. Or have these appear on a side bar if one were to look at affects/creatures in the area.

If there's a limit you could also prevent your foe from activating the totems they need by filling a scene with weaker low impact totems