I think I've just had a little tiny bit of the story ruined for me by CVG and their analysis video. One of them mentioned the casting call for GTA V and how it described certain characters and went into details R* hasn't revealed yet.
Maybe it was something they'd tell us eventually or maybe it's something we'd learn early in the game, no big deal. Though, on the other hand, maybe it was something that would have been brought up later in the game.