Frieza's plans to utilize the Cube Spaceship and conquer the Saiyans in Universe 6 as revenge against Goku and Vegeta remain unclear. While Legendary Super Saiyan Kale poses a potential threat, Frieza's motivations and ultimate goals are shrouded in mystery and will be unveiled in the subsequent Dragon Ball Super arc.
A conversation during the Tournament of Destroyers could shed light on why Black Frieza spared Goku and Vegeta in Dragon Ball Super.
In Dragon Ball Super chapter #12 by story writer Akira Toriyama and artist Toyotarou, Universe 6's Angel Vados informs her God of Destruction Champa that she had actually failed in getting Hit to join the tournament against Goku's Universe 7 by promising him the Cube Spaceship. Readers learned the potential consequences of this when Champa voiced his disapproval, explaining that Hit could exploit the Cube Spaceship's ability to travel across multiple universes to enact his twisted form of revenge.
After participating in the Tournament of Power, Frieza became aware that there were Saiyans in Universe 6. This suggests that Frieza may be planning to use the Cube Spaceship to travel to Universe 6 and conquer the Saiyans there to force them to serve him, mirroring his actions in Universe 7. This would be the ultimate revenge against Goku and Vegeta, who were responsible for crushing Frieza's empire and humiliating him.Since Black Frieza was able to easily overpower Goku and Vegeta on planet Cereal, Frieza should have nothing to fear when invading Universe 6. Based on his battle against Jiren, Hit is likely weaker than Goku now, and Frieza's Universe 6 counterpart Frost hasn't even unlocked the Gold form. The only real threat to Frieza is possibly the Legendary Super Saiyan Kale, but Black Frieza could even be more than a match for her, since readers still haven't seen him fight seriously. Would Frieza Know About the Cube Spaceship?
Unfortunately, there are still a few unknowns surrounding the theory. The Cube Spaceship's only visit to the nameless planet for the Tournament of Destroyers was to participate in the Tournament of Power, where each universe's angel transported their fighters to the Null Realm personally. However, since Frieza was not present for that event, it's entirely possible that he remained unaware of the Cube Spaceship's existence and thus factored them out of his plans entirely.
While Frieza did temporarily align with Frost during the Tournament of Power, revealing information off-screen, the context suggests that he might have also found other ways to acquire the necessary knowledge. His comments about stumbling upon Dragon Ball's third Room of Spirit and Time suggest that he was searching for something on the planets he has conquered, which could have indirectly revealed the existence of the Cube Spaceship. Additionally, the possibility of Frieza having established an existing relationship with Beerus, which could have facilitated the revelation of the Cube Spaceship's existence, cannot be completely ruled out.
Frieza appears to be planning a more devious scheme than ever before, as he prepares to return to Universe 6. Fans may not have to wait as long to find out what his true goals are, as his next arc is poised to be even more devastating than his previous ones.
Dragon Ball Super is a sequel to the original Dragon Ball series and the beloved Dragon Ball Z anime. It takes place ten years after Majin Buu is defeated and follows Goku and his friends on thrilling new adventures. Just like its predecessors, Dragon Ball Super was critically acclaimed and received widespread praise for its 131 episodes.