Since you have to be a God to become SSRé and Gods don't seem to change when they're using Ultra Instinct, doesn't that mean that a God of Destruction or Supreme Kai (Attendants can be promoted to Supreme Kai and Trunks has been an Attendant), would they have access to UI as a form, or would it be a technique they could incorporate into their SSRé form?
There are two ways of using Ultra Instinct. One: You can use it as a form (which is kind of a fluke because it required him to bust his limits to the point where his base form exceeded his highest transformation) or two: do it the Roshi way (which was not just similar, but is believed by even Beerus to be UI) That version of the form is just moving without thinking. The verison of Ultra Instinct that WE ALL can reach. You could put THAT on top of a Super Saiyan form, but it might not be as strong as Mastered Ultra Instinct, just as fast as it.
This is ACTUALLY HOW manga Goku learned to use Ultra Instinct. He just watched Roshi and remembered the words of his other teachers and noticed that he had been learning Ultra Instinct all along. He just started to apply everything that he had learned up to that point.
I think what Roshi had was more akin to UI sign. Who tf knows how he managed to achieve it despite having no training from Whis. Still think it was Toyotaro trolling.
Ultra Instinct is not foundationally a god-form. It is a fram of mind that ANYONE can achieve. What Goku did was a god-like transformation. What Roshi did was a frame of mind which is why Whis and Beerus were confused by it. It had no god-ki to it, but allowed him to move autonomously. It's because he had trained himself to do that. If you look back at the training that Roshi had Goku and Krillin do, you can see that he was already training them to use Ultra Instinct. That's why I personally think that the next person to achieve Ultra Instinct will be Krillin.
No, the main person who trained Goku before Whis to use something like Ultra Instinct was Mr. Popo and if you go back and look at those moments again you will see he was the closest in that aspect. Roshi just discovered that on his own and worked to master it on his own hence his performance against Jiren, albeit he did not master it.
@Ya Boi King Kai. Then why pray tell, has no one other than Whis and Beerus ever achieved the form before? If it's so easy to acquire it, then it should be popping up everywhere among mortals who meditate.
Last time I remember, Master Roshi was over 200 years old, is one of few mortals to learn ki control, and was known as the "god of martial arts". Just because Beerus and Whis have never seen another person use it, doesn't mean that no one else has or can. Ultra Instinct is allowing the body to move without thinking. This is actually a common occourance.
Nobody knew that you could control your power level until they the Saiyans came to earth. Raditz was surprised because Goku and Piccolo's power levels were so low and then sky rocketed so fast. Humans may not have the raw power of a Saiyan, but they have PLENTY of techniques and a lot of potential. Krillin these days is about as strong as Goku's Super Saiyan 1 form. That's a lot of potential. Human control over the power level shows that they were also the race closest to unlocking the secrets of god-ki. It's no big stretch to think that a human could achieve Ultra Instinct, especially one that has lived about 3X as long as a normal human.
It was shown in the time before the T.O.P that he was training like never before. Roshi could never quite clear his mind of his dirty thoughts, so he needed to train with Puar to overcome his desire for women. When he did that, he was finally able to let go and give up all controling thoughts.