Super Saiyan 7 Is An Unique Super Saiyan Transformation That Is Seen In Dragon Ball OS Numerous Saiyans Has Had This Form Most Notably Goku Of Course But Others Can Achieve It As Well It First Debuted In Dragon Ball OS When Gohan Was The Inventor Of The Transformation And Every Saiyan (Including Goten In This Instance) Can Transform Into Super Saiyan 7 Whereas Pan Can't Since She Is 1/4 Saiyan This Is Canon Keep In Mind In The Fan Fiction Dragon Ball OS Which Is Canon To The Dragon Ball Series Also Pan Is Not Canon So Therefore It Didn't Happen