If it was a deliberate troll by someone then I'm genuinely impressed as to how long they kept it up. Heck, Trig first came along back when it was the official PCFF forum on Delphi. Given that length, I do think he was real - in a surreal kind of way...
I never met him, but from the information he gave on here (and various other forums), he lived/lives about a mile away from me, in a right dodgy block of flats. I'm pretty sure he had genuine mental health issues.
Didn't he post a topless black and white photo at one point that we all thought was genuine?