An interesting thought I had about the ending of BiBG is that when the detective "dies" that might just be the dark urge taking over. The dying detective never actually sees anyone or anything there and the Dark Urge origin in the game definitely shows there's some amnesia going on there with the player character not remembering anything before the beginning of the game. Plus the detective in BiBG is never defined...we have no idea what race he is or what skills he might have, etc...that's all left to the player's imagination. So it might be a case of the detective from BiBG being the dark urge player character in game.
