100% Full Power

When Goku completed his transformation into a Super Saiyan on Planet Namek, Frieza found himself outmatched for the first time in his life. His true form, which had seemed invincible just minutes earlier, was suddenly inadequate against the golden warrior standing across from him. With no higher transformation available at the time, Frieza did the only thing he could: he forced his body to output one hundred percent of its capacity. The muscles across his frame expanded visibly, his height increased, and for a brief window he managed to match Goku blow for blow.

The Stamina Problem

That window closed quickly. The enormous energy expenditure caused Frieza's power to decline with every passing minute. Goku recognized this immediately and even offered Frieza the chance to leave, noting that the tyrant's strength was fading while his own remained steady. Frieza refused, and the gap only widened from there. By the time Frieza resorted to his final desperate attack, a concentrated energy disc, his power had diminished so far that even a direct hit would not have been enough. The form shares the same fundamental weakness as Super Saiyan Third Grade: the inflated muscles consume energy at an unsustainable rate.

Why It Became Obsolete

After Frieza's resurrection and subsequent training, he developed the Golden Frieza transformation, a state that vastly exceeded anything 100% Full Power could offer. Golden Frieza allowed him to compete with Super Saiyan Blue rather than merely keeping pace with the original Super Saiyan. The older power-up became essentially a relic. However, during the Tournament of Power, Frieza briefly demonstrated that he still retained the ability to bulk up if needed, and Frost from Universe 6 showed the same capacity, confirming the technique is not unique to Frieza alone.