Strogg
The Strogg are a barbaric race of telepathic alien cyborgs, bent on universal domination to satisfy their dependence on the food-fuel known as Stroyent. The Strogg cannot be reasoned with or dissuaded; they are committed to the annihilation of any form of life in their path. Strogg victims not mulched into Stroyent are forced to undergo Stroggification - a process of cybernetic augmentation and neurological hacking which removes their self-will and transforms them into ambulant weapons-drones, pliant to the will of the Supreme Strogg, the Makron.

Aggressor



The Strogg assault class can choose powerful heavy weapons such as the Hyperblaster fast-firing assault weapon and Obliterator Bosonic Orb weapon. He carries a large number of Shrap grenades and the explosive Plasma Charge.

Oppressor



The Strogg's fire support expert can call in artillery deployables such as the Plasma Mortar, Rail Howitzer and Orbital Laser, and can direct their fire against enemy targets. He also carries the rapid-firing Lacerator.

Constructor



The Strogg engineering expert constructs and repairs dynamic objectives and deploys anti-personnel and anti-vehicle turrets. He can choose from one of two support weapons; the Nailgun, or a modified Lacerator with built-in Grenade Launcher. He carries a number of Proximity Mines and the Repair Drone, an AI-based automatic repair tool that will pursue damaged Strogg vehicles, repair them and then return to the Constructor (providing he's still in range).

Infiltrator



The Infiltrator is a stealthy backstabber and saboteur. The Infiltrator can possess fallen GDF players, initially stunning them with his Bio-Electric Pinch Bomb, and then use their corpse as a disguise and infiltrate GDF bases. He can choose the Railgun, used for Long-Distance Sniping, or a modified Lacerator with increased accuracy. He also carries a remote Drone, which can be used to spy on the enemy.

Technician



he Technician keeps his team mates alive and shooting by replenishing their Stroyent supplies, giving them both health and ammunition in one fix. The Technician can deploy Forcefield emitters, providing cover for his team mates on the front line. He can also create Spawn hosts out of fallen GDF troops, allowing a Strogg reinforcement to spawn right at the battlefront. The Technician carries a standard Lacerator.

Global Defense Force

The Global Defense Force (GDF) is a paramilitary international rapid-reaction force formed from the various national armies and relief agencies in reaction to natural and terrorist disasters of the early 21st Century. It is the only military force with the equipment, command structure and mobility to defend Earth from the Strogg invasion. The GDF forces are humanity's brightest and best; they represent Earth's first and only line of defense against the pitiless Strogg raiders.

Soldier



Skilled with heavy weapons and explosives, the Soldier is your basic assault unit. He is best-suited for attacking roles or defending teammates while they complete key objectives. The Soldier can choose heavy weapons, such as the N93 General Purpose Machine Gun (GPMG) and N72 LAW Rocket Launcher. He also carries Fragmentation Grenades and the High Explosive Charge

Field Ops



The Field Ops can provide ammunition to the other classes as well as being the only class capable of using of long-range bombardment deployables. The GDF's Fire Support specialist, the Field Ops can deploy Fire Support guns in the field, and designate targets for them. His deployables include the Artillery Gun, Guided Rockets, and Strategic Hammer Launcher. He can also call in Air-Strikes and dispenses ammunition to his squad mates. He carries the N80 Assault Rifle.

Engineer



The Engineer is a support/defense class, constructing and repairing vehicles, deployables, and objectives (such as bridges and machinery). He also deploys and maintains defense turrets, such as the Anti-Personnel, Anti-Missile and Anti-Vehicle deployables. The Engineer carries the N22 Shotgun and multi-purpose mines.

Covert Ops



These elite operatives are able to use long-ranged sniper rifles and to gather advanced intelligence on the enemy. Often critical to mission objectives, Covert Ops can disguise themselves as fallen Strogg enemies and also hack Strogg technology to serve GDF needs. Rangers can use their PDA's to hack and disable enemy deployables, and deploy 3rd Eye cameras to spy on the enemy and relay their locations to his squad mates. The Covert Ops carries the N38 Sniper Rifle and smoke grenades.

Medic



In addition to providing med packs to soldiers on the front line, medics can also revive unconscious combatants. The Medic is a key supporting class, attacking any threats, but mainly maintaining the health of his teammates. The Medic can air-drop supply stations in the field, and carries the N80 Assault Rifle.