So today I was running around in town selling some items and I see a report of a monster scouting out the town.  Scouts can be really dangerous because they will eventually lead something worse into town. 

Anyways the funny thing is apparently I haven't put any controls into place limiting what kind of monsters can be scouts because the scout was a tower. :)  A tower is basically a magical stationary turret, so it's not exactly a good scout.  So as I'm chuckling about the scouting tower, it slides straight through the middle of town scouting around.  Apparently, not only can they be scouts currently, but they can move around when they are.  The town NPCs actually managed to kill it before I could do anything because I was laughing too much.