I really like the old Slann for the Rogue Trader era. You do not see them about much these days. They seem to have been over-written with the 'old ones'. I suppose in current background the Slann are the 'old ones', the terms interchangeable, though 'Slann' never seems to be used. The problem is that the old ones are so utterly-powerful, and the Slann being mere space frogs, that there is a bit of a disconnect. They do not really much up in concept. I quite like the idea that the Slann of the agents of the Old Ones. At time the interaction may be deeper, and the Slann Priest may function as vessel for part of an Old One's conciousness, an avatar of an Old One, or visionary. I see the Old Ones as only being able interact with reality through the Slann.
When I read background that refers to the 'Old Ones', I naturally think 'Slann'.
The actual Old Ones to me are far more mysterious, unknown, and unnamed (aside for 'Old One'). Kinda like the Outer Gods from Cthulhu (like Azathoth) if they remained unnamed. If this were the case the Slann are more like Deep Ones or some such, and the Old Ones are real Gods who we do not know the name off. As such I imagine the (40K) Old Ones to be far more powerful than a C'Tan - far bigger (in Cthulhu mythos I think the C'Tan would be more like a 'greater old one' (in a Cthulhu sense, not a 40K sense) - not even a proper god). I am even temped by the idea that the Necrons may have been one army of a rival Old One, or the whole war was 'nature', and the Old Ones were testing out their creations (and being all mysterious in their ways).
The 40K war in heaven between the Necrons and the 'old ones' mentioned in the background would not be direct war with the actual One Ones, but between the C'Tan/ Necrons and the Slann (and some Slann acting as avatars). Humans may side with the Slann and see them as the good guys, as the Slann are the ones that brought about our evolution.
All this may Old Ones are more cut off from our universe than the chaos gods! (Or the chaos gods may be corrupted Slann - which is really pushing it).
Perhaps Old Ones dwell within a layer under the warp?
I imagine that Slann were Psykers who were powerful enough to reach out to the Old Ones, to go beyond the warp and touch creation itself.
I wonder what sub-warp Psyker powers are like?
The Emperor of Mankind, may have some of these Slann like powers but weaker. It may account for the idea that he draws on a different part of the warp. Something deeper and unknowable to mortal man. It may also explain why he can use powers but is not keen on others using their powers, because he know that they can not reach the 'sub-warp' layers as he can and will be consumed.
The Primarchs were apparently 'warp enhanced', in strength and body, drawing power from the warp. Maybe this was a limited hard coded version of 'sub-warp' powers? Like a funnel of energy from deep down and up through the corrupting upper layers to the Primarch - keeping the energy uncontaminated (or at least that could have been the plan)?
Magnus was a very powerful Psyker, destined to sit of the Goldern Throne apparently, so have been able to reach all the way down to this 'sub-warp' layer. If he could do what the Emperor did (running with this whole concept) he would became stable, and that is why he did not become corrupt. Magnus did not succumb to chaos influence until attacked by Russ, which pushed his emotions over the edge, the anger mading him vulnerable?
Hearing feedback is very important to me in developing my ideas. Much of my designs are inspired, and crafted, by chatting to fans on forums before snowballing into a full concept you'll find here. I would like to thank all those who have contributed critiques and participated in discussions over the years, and I would especially like to thank all those who commented on this specific topic. If you would like join in, you are most welcome!
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