I don't think there is "Final Creator". The gods just seem to be beings of mass power, anyone could be the God of Destruction if he were powerful enough.
Btw, I think it's King Vegeta, the King of all saiyans, or the original Super Saiyan.
The Elder Kai did say something about "allowing" the Namek Balls, which makes you wonder what he meant.
The dragon balls can resurrect planets of people, recreate worlds, grant immortality, restore youth, restore SSJ Goku to full strength... They basically have the best feats of the series, and it makes no sense why supreme gods wouldn't have their own, better reality altering power.
__________________ What CDTM believes;
Never let anyone else define you. Don't be a jerk just to be a jerk, but if you are expressing your true inner feelings and beliefs, or at least trying to express that inner child, and everyone gets pissed off about it, never NEVER apologize for it. Let them think what they want, let them define you in their narrow little minds while they suppress every last piece of them just to keep a friend that never liked them for themselves in the first place.
No, there doesn't, I think I'd hate the movie if they showed that, I'd like Goku to Surpass possibly all the Gods, and it'd be really stupid if the last god was all-knowing and omnipotent.