yes if he can turn super sayian and super sayian 3 cause when goku turn great ape he also turn into a super sayian at the same time but if goku jr wants to become super sayian 4 then he has to remember something to calm him down when he is in great ape form
35. goku's ascension
Transformed At Last.
ya goku and vagita both become a super saiyan 4 at 1 point
Gohan is stronger if goku is in his normal form but if they are both in super saiyan 2 form or if Goku is in super saiyan form then goku is stronger.
About three times
He trained with Goku in the white chamber.
episode 286
Gogeta, the fusion of super saiyan 4 Goku and Vegeta.
Super Saiyan 2 goku cause he was able to defeat Broly as a Super Saiyan 1
Goku does not turn super saiyan 6 or 5 in fact. and it only goes up to super saiyan 3 in the manga and super saiyan 4 in the cartoon.
Goku can go up to Super Saiyan 4 there is no DB AF.
Be angry just like Goku saw Krillin died.