An extremely powerful and rare form of Super Saiyan, first appearing in Dragon Ball Z Movie 8. This form was originally exclusive to Broly, as he appeared in Movies 8 and 10. Appearance-wise, the user's physique becomes extremely bulky, their eyes become blanked out, and their hair becomes green-colored.
The form is reintroduced in Dragon Ball Super under Toriyama's supervision, being used by Kale and the newest incarnation of Broly from Dragon Ball Super Broly. In this continuity, the form is either referred to as "[Super Saiyan] 'Berserk'" or "Uncontrollable Saiyan" (when referring to Kale) or as "Super Saiyan Full Power" (when referring to Broly; appropriating an older term used for Super Saiyan Stage 4).