Ohh hey it's a new one of these. Nice. Now, would anyone be upset if I were to take inspiration from Silent Hill for my character? Say, something happened in his childhood that left him badly traumatised, but also opened up a pinhole Warp rift... "in him", for want of a better explanation, that occasionally sucks a small portion of his soul through, forcing him to experience pseudo-hallucinations alongside his real-self as the fragment fights off any daemons which might try to tear open the Warp rift so they can possess him through it. On the plus side, he'd probably be a psyker as a result of the pinhole rift, which... isn't really a plus, let's be fair... ahem.