Reavers

Reavers are insane, cannibalistic humans from the Fireflyverse. Various theories circulate around the planets as to their creation. The most popular theory appears to be that they are 'just men' who looked upon the uninhabited space beyond the edge of the system and 'went bibbledy over it'. However, it is revealed during the movie Serenity that they were originally created by the Alliance pumping a chemical known as G-23 Paxilon Hydrochlorate (see Forbidden substances) or Pax, into the atmosphere of the planet Miranda.

Agents encountering Reavers on a mission are advised to portal away with alacrity, and to never under any circumstances allow them entry to HQ. Reavers are deadly and apparently feel no fear or pain. Engaging them in combat is not advised.