Even when Dragon Ball creator Akira Toriyama tried to get away from Goku and let other characters shine for a while, it never panned out. The fans are too attached to Goku, and so he remained the main character of the series forever. Deerstalker Pictures has the benefit of being a fan production, and as such they've come up with a... different interpretation of who should be the hero of DBZ.

I'll give you a hint: He's bald, he wears sunglasses, and he's got an unhealthy obsession with yoga videos.