Not sure if this has been brought up before. Spoilers I guess.

Ever since I first saw Shuyin, I have always wondered exactly why he looked exactly like Tidus. I now wonder if it at all possible that Shuyin is the ‘real’ Tidus.

Consider this: The dream Zanarkand is created by Yu Yevon by his summoning of the Dream of the Fayth. Thus, the Dream Zanarkend is a reflection of the Fayth’s memories of the Real Zanarkand. Shuyin once lived in the Real Zanarkand, 1000 years ago, so is it possible that Tidus was created from a Fayth that remembered him? It would certainly be a plausible explanation as to why they look alike.

Once again, if this has already been debated, or his covered in the “perfect” ending of the game (which I have yet to obtain) then I apologize.