Yeah, you cross cannons and add your own stuff (hey, I do the same thing) so I was wondering if he would be like from special, the games, or the anime (which, as you said is pretty much blank though I always assumed based off his expression he was less sympathetic then his manga counterpart... but maybe less of a jerk then the game version. maybe.) Though my cannon revolves around the various manga series with little anime references here and there so I expected him to be one of Giovanni and Seren's kids :P

This makes me want to outline my fanfic idea now... for years it's been developing in my head so I never wrote it down though was planning on it.