Bioweapon/Legends

A Bioweapon was a genetically engineered *pathogen developed and used as a military weapon. It was often, although not always, designed to affect only a specific species or number of species.

History
Bioweapons have been in use in various times and by various cultures in the course of history. Apparently, their use was not exclusive to the known galaxy either, as Ship remembered the use of the Plague bomb in an ancient war in a far-away galaxy. In addition, the extradimensional Charon were known to employ bioweapons extensively.

Bioweapons such as Trihexalon were known in the time of the Old Republic, although it is uncertain if they were ever used. During the Clone Wars, the Confederation employed bioweapons such as the Loedorvian Brain Plague] in it struggle against the Republic.

The Galactic Empire developed a number of bioweapons during its time as the dominant galactic government, perhaps the most infamous being the Emperor's Plague and a number of other species-specific agents. After the Empire's fragmentation, the various succeeding Imperial Warlords continued to develop new pathogens. The most infamous use of bioweapons in Galactic history was probably the deliberate release of the Krytos plague on Coruscant by Ysanne Isard.

As technology progressed, bioweapons became more refined. In 11 ABY, Imperial scientists had developed sophisticated Nano-destroyers, artificial viruses keyed to a target's genetical makeup that were not only uncurable but also completely undetectable.

During the Yuuzhan Vong Invasion, both sides deployed bioweapons. The extragalactical Yuuzhan Vong destroyed several entire planets, most notably Ithor, using various biological agents and infected a number of Jedi with Spore diseases. Although the New Republic never sanctioned its use, Galactic Alliance Intelligence deployed the Alpha Red weapon on the planet Caluula.

Workings and use
Bioweapons could be synthetically developed, such as Nano-destroyers, or refined from existing substances, such as the Alpha Red pathogen, which was refined from Bafforr tree pollen. While most bioweapons did not see general use (those employed by the Yuuzhan Vong being the exception), they could be used for a variety of purposes. Lethal pathogens such as the Hive virus could be used for annihilating entire populations, while others were more subtle. For example, the Vira606 was administered to agents by the Imperial Security Bureau, making them dependent on constant antiserum injections and ensuring their loyalty.

Examples

 * Krytos plague
 * Nano-destroyers
 * Alpha Red