There are several broods in the game about which little is known. These include:
- Defenders -- A bluish brood with an apparently hardened arm carapace and head that can defend itself against most projectiles and hand-to-hand attacks.
- Smashers -- A Green-brown brood that rams enemies with a reinforced skull carapace.
- Arachnoids -- A strong purple and black brood that uses powerful jump attacks.
They are assumed to be special variants of the Warrior and Stalker aliens created through experimentation, much like the Chrysalis and Royal Guard minibosses.
Beginning with the fifth stage, the player also encounters human soldiers (Privates, Corporals, Sergeants) armed with various weapons - knives, grenades, smart guns, and pulse guns.
Power Loader[edit]
In one case, the player has to battle a human soldier in a Power Loader, a robotic suit designed to aid humans in moving heavy loads that was first used in the movie Aliens. It has been referred to as a Forklift On Legs and that is basically its purpose. However, the one in this game seems to have been modified for battle purposes.
Mad Predator[edit]
A Predator (or two Predators, if the game is played by two or three players) infected by the altered Facehuggers that produced the Infectoids. Rather than making this Predator zombie-like, the infection seems to have driven him insane. He represents a critical turning point in the plot and is significantly stronger than the Predators that the player can use.