The Future Trunks Saga is one of Dragon Ball Super’s most complex storylines, introducing time travel, alternate timelines, and the powerful duo of Goku Black and Zamasu. While Future Trunks initially returns to the present seeking help from Goku and Vegeta, the conflict quickly expands beyond the abilities of ordinary mortals. This is where Beerus and Whis become crucial to the story, using their divine knowledge to uncover the truth behind the mysterious villains and influence the direction of the saga.
Unlike previous arcs, Beerus and Whis are not simply observers. Their actions directly affect the investigation into Zamasu and alter the course of one timeline, even though they cannot completely erase the threat facing Future Trunks’ world. Understanding how the God of Destruction and his Angel become involved helps explain the complicated timeline mechanics and the events that ultimately lead to the final confrontation with Goku Black.
Beerus and Whis Join the Investigation
Beerus and Whis first become involved after Future Trunks arrives from his devastated timeline and describes the overwhelming power of Goku Black. Although Goku, Vegeta, and Bulma initially focus on helping Trunks prepare for another battle, Whis quickly realizes that the enemy’s identity may be connected to the Supreme Kai apprentice, Zamasu. His observations provide the first major clue that the conflict extends far beyond ordinary time travel.
To investigate further, Beerus, Whis, Goku, and Shin travel to Universe 10, where they meet the present-day Zamasu and his mentor, Gowasu. During their visit, Goku spars with Zamasu, unintentionally increasing the apprentice’s fascination with Saiyan power. Beerus and Whis also notice Zamasu’s growing resentment toward mortals, recognizing that his beliefs could become dangerous if left unchecked.
As the investigation continues, Whis explains the role of the Time Rings and how alternate timelines are created. These revelations help the heroes understand how Goku Black and Future Zamasu can exist despite events occurring differently in the present timeline. Whis’ knowledge of divine laws and temporal mechanics becomes essential for piecing together the villains’ origins.

Once Beerus confirms that the present-day Zamasu intends to murder Gowasu and misuse divine authority, he intervenes directly. Using his God of Destruction power, Beerus erases Zamasu with the technique known as Hakai, preventing him from carrying out his plans in the main timeline. This moment demonstrates that Beerus is willing to act when a Supreme Kai apprentice threatens the balance of the universe.
However, destroying Zamasu in the present does not solve Future Trunks’ crisis. Because Goku Black and Future Zamasu originate from an already existing alternate timeline, Beerus’ actions cannot erase versions of the characters who have already diverged from the main history. This limitation reinforces one of the saga’s central rules: changes made in one timeline do not automatically rewrite another.
Although Beerus does not participate in the final battle against Fused Zamasu, his involvement significantly shapes the story. His investigation uncovers the villains’ identities, while Whis provides the knowledge needed to understand the increasingly complicated timeline. Together, they guide Goku and Vegeta toward the truth even if they cannot directly resolve the conflict themselves.
The Future Trunks Saga highlights that divine power alone cannot fix every problem created by time travel. Beerus and Whis offer wisdom, investigation, and decisive action within their own timeline, but the responsibility for saving Future Trunks’ world ultimately falls to Goku, Vegeta, and Trunks. Their involvement adds greater depth to the arc while expanding the role of the gods in Dragon Ball Super’s evolving universe.
