Super Saiyan 6 is the successor of Super Saiyan 5. Son Goku is the first Saiyan to obtain this transformation, which he acquired in a fight with Vegeta. This form is far more powerful than its predecessors, it can be attained by a Saiyan if he/she merge their previous transformations and unleash their inner beast. When one reaches this form, they can maintain it for as long as they wish.