transhuman Overwatch soldiers and human Civil Protection officers. In addition, a variety of combat machines appear, ranging from APCs and helicopter gunships to a giant 'smart wall' which encloses occupied cities and gradually destroys anything in its path, as well as a number of weaponized alien 'synths'. Advisors Advisors are large larvae-like creatures which are virtually featureless, with no visible eyes, ears or limbs, though they do possess an eye-like mechanical device attached to the left side of their heads, and detachable mechanical arms. Their faces are covered by a form of respirator, which is able to lift to reveal a mouth-like orifice from which extends a long flexible proboscis. With this, they can examine objects, or attack and kill enemies. Advisors appear to be feeding upon their victim during their attacks. It is implied that Advisors are the original master race behind the Combine, with the Earth administrator Wallace Breen answering directly to them. Although Advisors are usually seen in protective pods guarded by Combine soldiers, they also possess telekinetic powers with which they are able to float through the air and immobilize enemies so that their proboscis can examine their victims without interference. Their appearance was based on the Guild Navigators from the film Dune. Civil Protection Civil Protection is the Combine's law enforcement agency on Earth, consisting of humans who have agreed to work on behalf of the Combine. Also referred to as metrocops, Civil Protection units wear light armor and gas masks, which heavily resemble a somewhat modified Soviet PMG mask. They are usually armed with electroshock batons and pistols, and are occasionally seen using MP-7 submachine guns. Metrocops are brutal in their methods, keeping the local populace in line via intimidation and physical force. Interrogations, inspections, raids, random beatings, summary executions and acts of extreme police brutality are all used as a means of policing their jurisdictions; their methods are justified by their role as "protectors of the civilians well-being". On the outskirts of City 17, Civil Protection units are observed patrolling for escapees from the city. Civil Protection officers are in constant contact with Combine Overwatch headquarters, which gives them objectives and situation updates. On the death of an officer, that officer's armor detects that its wearer is no longer alive and automatically informs the Overwatch of the fatality. Overwatch The Combine Overwatch is the primary military force of the Combine on Earth. It