Right now, I'm going with troll hunters for finding escaped prisoners, kytons for prison guards, orcs for lazy guards for the walls and watching the women prisoners farm, mind flayer boss with mind slave ogres for bodyguards. Two monks for lawful evil fun, and that medusa. We'll see about the other ones. Hell hounds might not be a bad idea.
I'll go with the ooze garbage pit.
Thanks!
Any more groovy ideas?