Super Saiyan

"This is..." Frieza and Vegeta, watching Goku from afar, suddenly tensed, struck by an ominous premonition. "What is Goku doing?" Krillin watched Goku from a distance and voiced his question through the Mental Network. "Can he still get stronger? That's terrifying." Tien Shinhan stared fixedly at Goku and spoke in shock. "Could it be..." Frieza and Vegeta's hearts both skipped a beat. Goku's hair drifted and danced in space. After his Fifteenfold Burst raised his base power level of 284,561 to 4.