Episode 59 of Dragon Ball Super could reveal more about Zamasu and how he gained so much power. Son Goku, Future Trunks and Vegeta all return to the past to stop Zamasu before he becomes too powerful.

With Zamasu on the move to gather the Super Dragon Balls and with the life of his teacher, Gowasu, in danger, the heroes of the anime have their hands full in trying to neutralize the emerging threat of the apprentice Kai. The only question, of course, is who among the heroes would bring an end to Zamasu?

Theory 1: Son Goku Defeats Zamasu

Numerous fans of Dragon Ball Super have so far been speculating that no other than Son Goku would bring an end to present-day Zamasu, preventing him from becoming the evil juggernaut that he is in the future. While Son Goku might have lost the fight in the future, present-day Zamasu is not as strong as his future counterpart as of yet. Thus, there is a good chance that Son Goku can still beat him, even in his current state.

Theory 2: Beerus Kills Zamasu

Other Dragon Ball Super fans, however, believe that the God of Destruction, Beerus, would end the threat of present-day Zamasu himself. In the preview for the next episode, Zamasu was seen to be attempting to poison his master, something which a God of Destruction like Beerus would most likely see as unforgivable. With his overwhelming power and his responsibility as a god, there is also a good chance that Beerus would be the one to strike the fateful blow on the apprentice Kai.

Theory 3: Zeno Destroys the Universe

The elephant in the room with regards to Zamasu's impending threat and his descent to evil is Zeno, who has given Son Goku a button that would summon the Omni King immediately. As all Dragon Ball Super fans know, the Omni King is all-powerful, and despite his childlike appearance, his temper has been described as so volatile that he previously destroyed six universes just because he was upset. Thus, if Zeno does get summoned in the next episode, and if the Omni King does see how low Zamasu has gone to achieve more power, the God of Everything might simply decide to extinguish all life in the universe.