Great Ape

The Great Ape is an immensely powerful were-beast from Dragonball Z, it is a destructive monster and although often the alter-ego of a hero (or anti-hero) it is almost always regarded as completely unreasonable and much stronger than a normal Saiyan.

The Great Ape transformation is thus potentially cataclysmic and greatly feared, it occurs when a Saiyan is exposed to the moon but can be countered if a Saiyan's tail is removed or if the moon itself is somehow destroyed.