- "It's the Pax."
- ―River Tam
G-23 Paxilon Hydrochlorate or "Pax" (Latin for "Peace") was a chemical compound added to the air processors in order to pacify the populace, by the Anglo-Sino Alliance. An Alliance research team on Miranda discovered that the Pax was effective with 99.9% of people. It was such an effective means of pacifying that the people stopped doing anything, they simply waited for death. However, a tenth of a percent of the population had the opposite reaction. They became highly aggressive, committing unspeakable acts including cannibalism, rape and self-mutilation. These people would come to be known as Reavers.