Ultra Instinct is the ultimate martial art technique Dragon Ball suffrage Known far and wide as the innate state for the Angels of the Multiverse, this legendary technique is notoriously difficult for anyone not related to this powerful race to learn, even if they are as powerful as the Gods of Destruction.
The main reason this is such a difficult concept to grasp is that the user needs to be completely calm and still in mind, through which their body reacts to danger on its own. Goku is the only person though Dragon Ball Aside from Angels who are able to fully utilize it, few characters would make perfect candidates to eventually unlock it for themselves.

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God Techniques are the most powerful techniques in the Dragon Ball Multiverse, and these users are particularly terrifying and dangerous.
5
Gohan could potentially unlock this technique
A separate path to power
After the Tournament of Power and Granolah arcs, fans were convinced that it was only a matter of time before Gohan would unlock Ultra Instinct. Although his Incredible Beast form was speculated by fans, a large number of fans believe that it may still be possible in the future.
Although unlikely, from a basic perspective it wouldn't be wrong to assume a connection between Gohan and Ultra Instinct. Ultra Instinct requires calmness and control above all else, making Gohan a good fit for this technique due to his composure against powerful villains as well as his cerebral nature.
4
Master Roshi seems to have already mastered the technique
Goku's legendary teacher
It's safe to say that Goku wouldn't have gotten even close to where he is without the direct influence of Master Roshi, known in the universe as one of the greatest martial artists. Although his power was already powerful, the real reason he was a prime candidate for learning Ultra Instinct was because he already had something similar.
The most important thing to use this technique is a calm heart and mind, so that the user can fully immerse himself in the battle. Although he is far from his prime, Roshi's calm nature allows him to easily dodge a barrage of attacks from Jiren, making him the closest since Goku to gaining Ultra Instinct.
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3
Uub is a great candidate to get Ultra Instinct
A dormant powerhouse
As the human and pure reincarnation of Kid Buu, Uub was born at the end of the Buu Saga due to Goku's wish. As such, he is also the recipient of a large amount of divine energy, which he received from the Grand Supreme Kai's time when he was absorbed by Majin Buu. Because of this, many think he is the perfect candidate to gain Ultra Instinct.
in Dragon BallThe human characters aren't really important for a while, except maybe Krillin. Seeing as how Ultra Instinct is a technique rather than a species-specific transformation, this makes Uub the perfect person to keep apart from Goku, especially given his immense latent power as a reincarnation of Kid Buu and the well of divine ki he already possesses.
2
Jiren makes for an amazing Ultra Instinct user
The Great Warrior of Universe 11
Out of everyone on this list, Jiren is most likely to have unlocked Ultra Instinct by the time we next meet him. The main reason for this is that his composure in battle and unparalleled ki control make him the obvious choice for someone to be able to unlock the technique in the first place.
Also, his fight against Goku at the end of the Tournament of Power arc showed him the power of this technique, as well as the fact that it is possible for a mortal to learn it, so it is very possible that he has been training continuously since the tournament to gain greater strength through Ultra Instinct. Through this, it makes a perfect way to reintroduce Jiren to the story.

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1
Beerus can already use the basic Ultra Instinct version
The strongest destroyer
Unsurprisingly, Beerus is the character closest to acquiring this technique, and in fact, he's already shown the ability to use it. During the Destroyer Exhibition Match, all the Gods of Destruction jumped on Beerus at once, but he managed to take them all down due to his strength, tactical genius, and use of Ultra Instinct.
However, admittedly, his use of the technique is very basic, as he uses it in his Ultra Instinct Omen state, which Goku also went through. Still, his use of it shows that he already has the ability, so it's only a matter of time before he can master it and use it to its fullest to become the strongest being in the multiverse.
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