I thought I would discuss, with a view to feedback/criticism, some of the ideas I'm having as I try writing my first DH adventures. I have two characters (and their owners best NOT be reading this!
!), an assassin and a psyker.
The latter is a voidborn psyker with a shock of white hair left over from the sanctioning process who comes from a space hulk and has a shadow over his soul (as per IH). The former is a Sinophian assassin whose appearance resembles Deckard from Bladerunner.
What I thought I would do is expand on their histories thus, I don't think this will encroach on any ideas they have having completed character creation:
The psyker will have been with the Inquisition since day 1. His origin and his experience mark him as unusually powerful: he grew up on a space hulk and has survived a daemonic encounter during the emergence of his powers. Cosnequently he has been watched since being found by the Imperium. I'm not sure how one lives on a space hulk, but his powers were his means of survival - as was the daemon that he encountered. In fact I would go so far as to say the community he was born into didn't even exist: they were a product of the warp filtered through his untempered perceptions. Somehow he survived. This has ultimately led him into the purview of Lord Harkness Greyfear of whom he is now an acolyte. Greyfear believes in a particular prophecy: a child born in such circumstances who will become a living weapon. Whether for or against the Imperium is a matter of conjecture and Greyfear is somewhat Radical (capital R, I have the handbook and it is cool). Greyfear seeks to be the catalyst for the fulfillment of that prophecy against the backdrop of the machinations of Calixis and the Tyrant Star. The psyker is unaware of this; he is, as yet, ignorant of all of this and knows only that he has survived his emergence and a daemonic encouter during.
The assassin doesn't have so strange a background. My initial idea may be a bit much for a rank 1 (as both characters are) acolyte: he came to work for Greyfear not by choice. It seems that he accidentally uncovered information regarding the psyker and was given the choice by Greyfear to either serve or... The basic idea is that the assassin is there to watch over, as well as assist, the psyker. If the psyker loses control beyond the point of return it is the assassin's duty to grant him the Emperor's mercy. The assassins knows that the psyker has some importance to Greyfear but doesn't understand (or perhaps beleive) in such superstitions as prophecy.
Both characters have, at some point in the past, dreamed of the Tyrant Star. They know not what it is, what it means or even if such dreams are portentuous at all. The psyker will have dreamt of it more, but again no importance is attached. The specific image they each recall, though neither knows the other has dreamed this (in character) or what the tyrant star is in any waty shape or form, even as a legend, is that image in the rulebook of the city scene where people can see the star in the sky. A great picture.
Lord Greyfear is a work in progress. I would like him to be as detailed as the inquisitors within the rulebook as described in the Tyrantine Cabal as each is interesting and multi faceted. He is radical and not averse to 'fighting fire with fire' shall we say, when it comes to dark knowledge and resources. He is also mutated and covers himself well. He speaks only through an advocate; a particular acolyte that always accompanies him known as Malachus.
That is all for now.