I don't know. It's really a mind thing. Goku's strength is a big part of it. But... I dunno. Zamasu is a Kai, and he was chosen to be the Supreme Kai because of his strength. I say it's more than possible, if not likely that Goku Black could achieve UI.
MoonAndBackGaming wrote: I don't thinks so because in the latest chapters of super it is explained that UI is achivn by being calm and focesed, those words don't exactly match blacks personality or mindset.
people can change though. If people couldn't change what would be the point of life?
Black originally was calm and focussed. But when he got the snot beat out of him by Vegeta, he discovered that he would be better served letting out his infinite well of rage. That's when he created the Sicle of Sorrow and sliced a hole in the fabric of space. Black only achieved that when he stopped beign so calm and focussed. Zamasu was known to be the strongest Kai warrior in his universe, and he was aparently strong enough to use a non-full power body of Goku better than even Goku could. If Zamasu's soul was 100% meshed with Goku's body, SSR Black would outclass probably even SSB Kaioken Goku. Not to mention that Black would be able to use Kaioken too. We never saw Black's full potential, but it's probably safe to say that it was higher than Goku's.
Goku Black was forever youthful thanks to Zamasu's godly soul, his healing was ridiculously fast and he always got huge Saiyan Power boosts, his boosts from his rage were big too. Goku Black was the strongest Saiyan before Broly came around. I think that if not for fusing with Future Zamasu he would have survived that battle, he doomed himself when he did that fusion.