Has anyone considered using these characters in their games? Since I'm coming up with suitably epic plots for 40K now that I've decided to run Ascension, the idea came to me to include something like them. If you're not familiar, you can find more info on Lexicanum but in a nutshell, they are rumored to be the actual literal children of the Emperor, conceived with human mothers throughout his life. They are insanely potent psykers, naturally, but more than that they are interesting because they have the ideals of the old Emperor in their genes. They oppose oppression, and they are said to be untouched by the emotions that feed the Chaos gods: hatred, lust, nihilism and deceit. They almost don't register in the warp, despite their crazy powers, and they don't age. They are essentially the counterpoint to the champions of Chaos. They are champions of the Emperor. What makes them BA as a campaign idea, though, is that they are rebels against the foundation of the Emperor. The church, the crazy backwardness, all of it violates their concept of what the Imperium should be and they are actively hunted by the Ordo Malleus among others. Part of this is selfish, because they can be "rendered" into anti-psychic material used to create the psy-charged armament of the Grey Knights and others. Of course, they represent a serious threat because one of their beliefs is that the Emperor should be allowed to die so his soul can be released into the warp to fight the Dark Gods.
Basically, this could be a chance to really make the players question their role. If they have any inkling of what the Sensei really is, who wouldn't be torn hunting him or her down? Is this just too epic? I can easily see running an aspiring champion of Chaos as a nemesis in a large campaign arc, so these guys and gals could work too I should think. Anyone toyed with the idea before?
, and had a thought. What if the groups patron inquisitor, assuming no-one's ascending straight to Inquisitorial rank, is an Illuminati? You could have a mini-arc of him either potentially trying to corrupt and then exorcise a member of the cell or slowly trying to bring them to their way of thinking, slowly revealing truths until one of the group agrees to such a thing. It's been years since i read Harlequin but I remember that being essential to be an Illuminati, namely be possessed and then cast it out yourself…