REPLICATORSTechnologically advanced "bugs," Replicators are programmed by their creators with only one objective: self replication. Anything and everything that interferes with this plan of infestation, annihilation and duplication is immediately at risk.
The world where the Replicators originated is actually in our own Milky Way galaxy. A corrupt and childlike android, Reese, created the Replicators to be her "toys," but also capable of defending her from threats. As their creator, she also passed on to them her own design flaw. As the inhabitants of her world feared the toys, and tried to destroy them, she ordered them to "replicate at all costs." She quickly lost control, and the Replicators annihilated her civilization, and her own creator in the process. After the Replicators left, Reese went into a deep depression and deactivated herself.
Replicators are composed of hundreds of individual blocks, which are comprised of whatever substance the original Replicator has consumed. It is unclear how many blocks make up a standard Replicator, but two Replicators are required to make a third, and thus exponential growth. It takes only a few blocks to replicate new blocks, and in a few hours Replicators can breed from a handful into hundreds.
There are different kinds of Replicators, depending on what the creatures require to achieve their goals. The most common is the "spider" Replicator, with four legs and wing-like flippers on its dorsal side. Another Replicator is much larger and insect-like, appearing in the general shape of a giant fly. It also has four legs, but enormous "wings" allowing it to roll on its back when it lands on the floor, then righting itself. It can also leap great distances.
A third type of Replicator is an assemblage of many thousands of Replicator blocks, which comprise a single, story-tall mother Replicator, capable of siphoning, regulating and energizing an enormous amount of power. Logically, the mother Replicator may also coordinate the activities of all other Replicators.
Replicators generally operate in groups, but it is unclear how their social structure is organized, and there seems to be no apparent means by which they transmit and receive information to and from one another. Despite this absence of information, they are very effective at cooperating with each other to achieve their objectives. If need be, Replicator blocks can simply form a "wall" to block aggressors who would impede their objectives.
Goa'uld and other energy weapons are incapable of stopping Replicators, though the sheer force of such a blast does "halt" them for less than a second. Human weapons, which launch projectiles, are much more effective, causing the blocks to break apart from one another. However, this can only solve problems for a few moments; the Replicators reassemble with a vengeance and come again. Once shot a second time, the blocks do not tend to reorganize.
Generally, Replicators will not attack unless they are threatened. They can, in fact, clamor over and past an individual without a hint of malice; but once they are fired upon, a vengeful subroutine in the Replicator makeup emerges, and the creature becomes a serious threat. Their highly acidic "spray," used to help break down metal alloys to create new blocks, is deadly.
Replicators have been a serious threat to the technologically advanced Asgard empire, which has exhausted all unilateral options within their arsenal of ships and weapons