The highest form of Goku in the Dragon Ball series is the Ultra Instinct form. This form is achieved when Goku is able to master the Ultra Instinct technique, which is an extremely advanced and difficult-to-attain fighting style.
In this form, Goku’s power, speed, and reflexes are greatly enhanced, and he is able to react and move at incredible speeds without even thinking. His hair turns silver, and his eyes turn a bright silver-white color. This form was first introduced in Dragon Ball Super during the Tournament of Power arc, and Goku has only been able to achieve it a few times under extreme circumstances.
