When did Goku transform the first time in a Super Saiyan 3 and how did Goku learn to transform into a Super Saiyan 3? - Quora

Answer (1 of 9): Goku learned how to transform into Super Saiyajin 3 while in heaven, after he died when Cell self-destructed, according to Goku himself. He couldn’t fully control the form though, and its energy consumption was enormous. Using a power like that in the living world with a dead bod

Can Cell go Super Saiyan if he trains? - Quora

Will Goku ever add Super Saiyan 2/3 on Super Saiyan Blue? If he did, how powerful would he be? - Quora

Did Goku master Super Saiyan 3? - Quora

What minor/overlooked transformation or power-up scenes did you like from the entire Dragon Ball series? - Quora

Can we all remember how the Super Saiyan 3 transformation was so awesome? - Quora

How does Goku turn into a Super Saiyan? - Quora

What are the best transformation of Goku? - Quora

Could Gogeta and Vegito turn Super Saiyan 3? - Quora

How does Goku turn into a Super Saiyan in 'Dragon Ball Z' and how does Goku find out he can get stronger than a Super Saiyan? - Quora