First off, it's the same Ganondorf/Ganon throughout all the games. Second, Ganondorf can't be in this game, as his origins are in Ocarina of Time. So he doesn't "have to be." In fact, it's the total opposite. Plus, the Triforce is whole in this game. It didn't split until Ganondorf touched it in OoT.
I want proof of him being the same in every game. Back it up.
Also, in general he is a third of the triforce. That's what he is known as.