Pig Cops are mutated alien operatives positioned to suppress residual human opposition and to police the new centers of alien power on Earth. Their distinct warthog-like appearance and aggressiveness make them easy to spot, but with protective body armor worn beneath their uniforms, they are as hard as nails.   Large, hi-tech, Kamikaze, hovering metal bread bins. By the time Duke hears their high pitched whine as they engage their anti-grav propulsion units, it's probably too late. The drone will swiftly collide with its target and explode with great force.   Ugly enemies that look like they've been grilled on a barbecue, the Assault Troopers are the first offensive wave against Earth's defenses.   The hulking Battlelord commands the alien attack forces on Earth and makes the very ground he walks on tremble. His deafening roar splits the air as his rapid fire artillery and mortar rounds tear bodies asunder.   With chaingun blazing, the Armored Enforcer can make fast business of dispatching any remaining human opposition. Powerful hind legs enable the Enforcer to leap to many places where an unsuspecting Duke may be caught off guard...So beware.   Similar to the Assault Trooper, and they may look cuddly in their red jackets, but Assault Captains have a wrist-mounted Phase Induced Teleporter Device (PITD) capable of physically transporting its user to any destination within the device's range.

Abundant brain mass and specialized trifocal vision combine to make the Octabrain a formidable alien weapon. Their method of attack is a powerful blast of mental energy released against its prey, thus weakening and confusing its intended victim.   The ultimate leader of the alien attack force. No human has managed to get close enough to report on it and live.   It emerges from its egg case ready to suck any creature's brains out through their nose, leaving a lifeless heap on the floor. Yes, they do look remarkably like a large lump of snot, but a Protozoid Slimer is evasive as it stretches its elastic body from ceiling to floor, and then creeps up an unsuspecting pant leg for the coup to grace.   Little is known about this alien biological weapon except that it is capable of unleashing powerful rocket attacks from its surgically implanted dual launching system on its massive back. Its behavior and weaknesses are a complete mystery at this moment.   This sleek and deadly anti-gravity powered reconnaissance vehicle is operated by specially trained Pig Cops to help suppress areas of human resistance. The pilots of these craft are protected by an automatic pilot ejection mechanism that activates milliseconds before impact during a crash.   The free-floating Assault Commander knows how to throw his weight around as he engages his anti-grav spin-deck in your face. When at greater distances, he fires deadly rockets from his rear-port (that's the polite word for it!) which dangles below his anti-grav spin-deck.