Inhabitants of a Long forgotten Lands

There was a story in my head that I was playing with for a while of a long forgotten city made using ancient high technology and abandoned mysteriously. Some of my recent miniatures belong to that story. I'd like to develop it a bit further, release some more characters that are part of the story in the future and see how far i can go with it.

The ancient automatons, animated by unknown technology, walk the streets of the Forgotten City. They attack without warning anyone who dares to approach certain areas. They seem to follow commands transmitted to them through ether to the ornaments placed above their heads. They are said to be used for communication with other automatons. Attacking one of the mechanical creatures usually result in alerting the whole group. Damaging the right elements of their armor on other hand often force them to stop their attack and force them to retreat.

While their exact function remains a mystery, they have been observed acting as guards inside the city and attacking anyone who tries to enter some of the forbidden places.

The Lost City is a legendary place of unspoken treasures and is being a target of many adventurers. Not many of them however live to return and tell their tales.