This state is achieved when a Saiyan is nearly killed and manages to briefly manifest their Super Saiyan power, and it cannot be accessed at will. The Pseudo Super Saiyan form gives a large power increase, enough for Goku, who was being easily beaten previously by Lord Slug, to now quickly overwhelm him. However, it is implied by King Kai that even this state would be unable to defeat Great Namekian Slug. During the battle against Lord Slug, Goku's strength began to quickly deteriorate.