The Astral Archive #130

The Thirteenth of the Watchers: "The Watchers have no will of their own - they are spawn of the Great Darkness, its puppet soldiers that strike without thought and kill without mercy. It is a great mystery how they come to be, where they come from. As with all mysteries surrounding the Reaper, there are many whispered answers. The Thirteenth bears one of them, or so it is said. Enlightened mystics and atmatechs whisper that while much of the Branched Legion is ancient, still prowling the Realspace in search of those who would oppose the Court and its nameless plans, certain Watchers are much younger."