Super Saiyan Four

Super Saiyan Four is a transformation, Only accessible by becoming a Golden Ape and controlling yourself into this form, There's two grades to Super Saiyan Four, Ultra Full Power Super Saiyan Four, And just regular Super Saiyan Four. Super Saiyan Four has a multiplier of 4000x. UFP SSJ4 Has a Power Multiplier of 4751x. It is slightly weaker than SSJ5 by 100x, Using UFPSSJ4, Would be more useful than SSJ5, As it drains less.
To unlock this form, you must go to the city and find the NPC behind a building. Transform into a Golden Oozaru (Golden Great Ape) and talk to the NPC and select the correct options. Once you have selected the correct options, you will be given the Super Saiyan 4 form. This form is required to unlock Super Saiyan 5.