Quoting Neil Dynamo Oh that's cool, and quite the original idea as well. Using the toxic fog as a weapon, I don't know why anyone thought of that before... The design is quite neat too, I like the 3-legged walker isntead of the standard 4-legs you see all the time. It definetly looks like a "clean up" drone, meaning that once the frontline has been sufficiently advanced these guys are sent in to neutralize any wounded/survivors hidding in rubble.