We find out why Akira Toriyama created the Super Saiyan in Dragon Ball, and it has nothing to do with the story.
Goku's Ultra Instinct is his strongest form, and it completes his character in a way many fans may not suspect.
Dragon Ball's creator Akira Toriyama passed away last year, with his influence living on in a new piece of fanart from DC ...
Goku turns into Super Saiyan 4, confirming that this form from GT is now canon. This form is slightly different than GT, where the characters had black hair instead of red like in Daima.