"So remember when we made this DBZ movie where we couldn't be arsed to design a new villain, so the bad guy just looked like Goku for no reason? How about we do that again, but explain that he's a guy using Goku's stolen body from another dimension!"
"Have you been looking up Dragon Ball OCs on the internet?"
(I mean ffs, DB and DBZ was full of interesting monsters and aliens, and now it's Goku, but in evil?)
Should've gotten a different color so they could form the Super Sentai Saiyanger. Though I guess they would still fight over who will become Super Saiyan Rainbow.