Experimental Mech-Sentinels are robotic guards with cannons as arms. They are stronger and more dangerous than human guards. When defeated, they explode.
Experimental Mech-Sentinel


The Experimental Mech-Sentinel originally had a Terminator-like appearance in its early stages. However, the "Terminator" design did not make it into the final game. The sprites for this design concept were not removed; they can be viewed in Debug Mode.
Mech-Sentinel design concept

Early Mech-Sentinel design