Through the ages, Mankind has met and overcame many problems. In the age of spaceflight, a problem cropped up that no one seemed able to answer. The symptoms could be kept in check and through the right measures people can be kept from experiencing this problem. But in the end, this problem is a great one that can strike anyone out of the blue and almost no one is immune to it’s effects. Sometimes, when you stare out into the void, something stares back.
Though not a single entity, the Reavers are bands of pirates and the insane. These people crop up on long real-space journeys, where people are left to contemplate their situation amongst the vast nothingness that is space for months on end. Some people slowly become more and more cynical and mutiny. Others go mad with blood lust and kill those that haven’t been ‘touched’ like they have.
Reavers commonly gather together in small fleets and hunt other ships in the void, stealing most of their supplies from the loyal Imperials. Much worse are those that have that special kind of insanity that keeps them acting quite sane from the rest of the public. Most Reavers are misinterpreted as Khornate or Slaaneshi cultists, but a small handful still operate within the normal confines of society, waiting for the right moment to snap and destroy an entire planet.