The Fedayeen are a secretive order of paramilitary operatives that may have been formed at some point during the Isolation. Alternatively, they may have emerged from a longer period of quiescence. Vasudan survivors of the Lucifer attack force are rumored to have vanished into their ranks shortly after the Ubuntu Party rose to power.

The Fedayeen may have been implicated in a number of violent direct actions during the Federation's reign in Sol, ranging from kidnappings to assassinations to actual spaceborne engagements with Kuiper Belt fringe elements. It is unclear whether the Council of Elders ordered these actions, or whether the Fedayeen operate on their own discretion without outside supervision. It is noteworthy that no hard evidence exists to directly connect the Fedayeen in any of these incidents, or even to substantiate their existence.

Whatever the case, the Fedayeen appear to be talented, disciplined, and extremely loyal, with access to significant resources and a vast intelligence network.