Goku SSJ4 JUS

Super Saiyan 4 is a type of Super Saiyan transformation and the controlled variant of the Golden Great Ape form which first appeared in Dragon Ball GT. The form is a different branch of transformation from the earlier Super Saiyan forms, such as Super Saiyan, Super Saiyan 2 and Super Saiyan 3.

The only way a Saiyan can attain Super Saiyan 4 is if they have a high enough power level and become a Golden Great Ape (or Broly’s variant) and regain conscious control over the form. Even after this form is attained, it cannot be accessed at will and requires exposure to Blutz Waves every time the user wishes to transform, however, in GT only, Goku is apparently a special case, capable of using the form whenever he wishes.[6] In Dragon Ball Heroes Gohan acquired the form without a tail while training, and Xeno Trunks was originally going to have acquired the form too showing that even Half-Saiyans born without tails can still acquire Super Saiyan 4.