Zamasu

Before his infamous turn, Zamasu held the position of North Kai in Universe 10 and was later promoted to serve directly under Gowasu as an apprentice Supreme Kai. He showed immense promise, combining natural combat talent with a deeply philosophical mind. Gowasu admired his discipline and noted that the way Zamasu brewed tea reflected a balanced and just heart.

However, cracks in Zamasu's worldview were already forming. He struggled with the concept that mortals, despite receiving the divine gift of intellect, consistently chose violence and destruction. Observing the warlike Babarians on their home planet during a training exercise with Gowasu only deepened his conviction that mortal life was fundamentally flawed. Where Gowasu saw potential for growth, Zamasu saw an endless cycle of prosperity followed by self-destruction.

The turning point came when Son Goku visited Universe 10 and sparred with Zamasu. The encounter shocked him to his core. Here was a mortal who possessed power rivaling that of gods, yet displayed a carefree and almost irreverent attitude toward divine authority. Goku's very existence challenged everything Zamasu believed about the natural order. His philosophical unease hardened into outright resentment, and his tea, once a symbol of inner balance, turned bitter.

After learning about the Super Dragon Balls and their ability to grant any wish, Zamasu abandoned all restraint. He threatened Zuno for information, plotted against his own master, and ultimately committed the unthinkable: murdering Gowasu to claim his Time Ring. His alternate timeline counterpart went even further, stealing Goku's body through the Super Dragon Balls to become the entity known as Goku Black.

Zamasu's grand design centered on the complete eradication of all mortal life across every timeline. Working in concert with his future self, who had wished for an immortal body, the two Zamasus launched a devastating campaign that reduced Future Trunks's Earth to ruins. Entire civilizations fell as the pair systematically wiped out gods and mortals alike, believing they were purifying the cosmos of its greatest blight.

When Goku, Vegeta, and Future Trunks traveled to confront them, the battles that followed tested Earth's defenders like few conflicts before. Zamasu's combat skills, refined during his training under Gowasu, combined a fluid and precise fighting style with devastating ki attacks. He could read opponents with surgical precision and counter their movements in seamless fashion. His signature technique, the God Split Cut, channeled divine energy into a blade capable of slicing through nearly anything.

The two Zamasus eventually resorted to Potara Fusion, merging into Fused Zamasu, a being of staggering power. This fusion combined the immortal body of Future Zamasu with the raw combat strength of Goku Black. However, the merger proved unstable; the contradiction between one mortal body and one immortal body caused Fused Zamasu's form to deteriorate, with half his body mutating grotesquely even as he grew more powerful.

What makes Zamasu compelling is not simply his power but the sincerity of his convictions. Unlike many Dragon Ball antagonists driven by conquest or personal gain, Zamasu genuinely believed he was performing an act of cosmic justice. He saw himself as the one enlightened god willing to do what the others would not: correct the fundamental error of mortal existence. His capacity for compassion had not vanished; it had simply been warped beyond recognition into something monstrous.

His relationship with Gowasu highlighted the tragedy at the center of his character. Gowasu was a patient and wise teacher who tried to guide Zamasu toward understanding that mortals needed time to grow, and that their mistakes were part of a larger process. But Zamasu's idealism was too rigid to bend without breaking. He could not accept that imperfection might serve a purpose, and so he chose annihilation over patience.

In the main timeline, Beerus destroyed Zamasu before his plans could unfold, erasing one version of the threat. But in Future Trunks's timeline, the damage was already done. It ultimately took the intervention of Future Zeno, who erased the entire timeline, to put an end to Zamasu's influence. The arc remains one of Dragon Ball Super's most thematically rich storylines, exploring questions about divine responsibility, the limits of justice, and what happens when righteous intent is corrupted by absolute certainty.