In dragon ball GT and dragon ball AF
No
yes. Goku jr. can turn to ss1, ss2, ss3 and ss4! But when it turns ss3 in his small body, he cant keep it for long. So he has to turn to ss4 as his body grows up to its original form when he becomes ss4. (he grows up)
SS4 Goku because he always have been some steps in front of Vegeta
goku ss4 but sometimes it depends what form gotenks is in
Goku turns SS4 in Episode #35 gt.
no
yes
SS4 Goku
goku ss4 is stronger.He is stronger because he didnt need any help from bulma to go ss5.Also he has always exept for their first meeting surpassed vegeta.
super saiyan four
no.
yes there is