In gt and they became the most powerful figher in history ssj4 gogeta
it happened when ss4 Gogeta fused with ss1Go-tanks and Gohan
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.
Well goku is the ultimate super sain so goku is stronger
No
SS4 Goku
yes
no
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.
Buu was killed by a team effort of Goku and Vageta (no they did not use fusion). He was killed with a spirit bomb, that gathered energy from all over the entire universe! So technically Goku killed him.
super saiyan four