Customizable Attacks

Hey this just came to me when I was playing Dragonball z Budokai Tenkaichi 3. I was playing the Saiyan saga story mode it was goku vs Raditz. When I looked at Goku's skills and noticed he has the spirit bomb and kaio ken attack.But he dosen't learn those two attacks until after he defeats Raditz.But he should have the Super Kamehameha. But how do we add another attack with out having to create another Goku? Go to character customization.Then go to equip item and there you can add different special attacks that character should have.