Talk:Rell/@comment-49.177.160.163-20180214103130/@comment-2604:6000:A24C:5600:B863:54DE:9530:4F95-20180601114443

The Man in the Wall is probably a little bit of all three. Personally I think the Void is much like the Warp from the Warhammer series, a place completely seperate from our reality, but heavily influenced by our emotions and can leak through, like the fissures we're closing all the time.

Considering the three most powerful factions in the System are at war right now and all the death and despair that brings, after 1000 years of that building up could be part of why it's just now that Rell's spirit is becoming weaker. Of course that part is the most speculative based solely on the fact that story missions in Warframe are in chronological order.

As far as the Man in the Wall itself being an entity/ the manifestation of the Void/ our own negativity + insanity, it'd be like a demon of the Warp in Warhammer to make further comparisons, made initially of negative emotions and energy and then given or taking whatever form it wants, mainly either disembodied voices in our heads or exact copies to haunt us and drive us to make bad decisions/ Paladino did say at one point that Rell's sacrifice kept void-rail travel safe (So the crew didn't go insane while they did it)