What is the Tournament?

In the aftermath of his defeat, Future Trunks stands alone on the battlefield, replaying Cell's words about the fear and panic he intends to unleash. Overcome with frustration, Trunks explodes with energy before collapsing to his knees. Vegeta and Krillin arrive shortly after. When Trunks admits his loss, Vegeta dismisses him as foolish for ever thinking he stood a chance. Krillin nearly reveals that Trunks' power actually surpassed Vegeta's, but Trunks cuts him off, protecting his father's pride even now.

The group relocates to Capsule Corporation, where the wider circle of allies gathers. Trunks explains Cell's planned martial arts tournament to everyone, and the news lands heavily. Master Roshi recounts the history of the World Martial Arts Tournament, from his own battles with young Goku through the destruction that ended the event's regular schedule. Chi-Chi objects furiously to the idea of Gohan fighting, triggering a flashback to her longstanding dream of raising her son as a scholar rather than a warrior.

Android 16, still heavily damaged, approaches the group and requests repairs so he can join the fight against Cell. Trunks is openly distrustful, viewing all androids as threats based on his future timeline experience. Krillin intervenes, arguing that things do not have to follow the path Trunks witnessed. Dr. Brief takes on the repair work but finds it challenging. Meanwhile, inside the Hyperbolic Time Chamber, Goku and Gohan continue training as Super Saiyans in extreme conditions, pushing through fiery environments until Gohan falters and drops out of his transformation. Far away, Cell selects a location for his tournament and carves a pristine fighting stage from the surrounding rock, carefully cutting stone blocks into a flat, squared arena. His preparations are complete. Now he just needs to spread the word.

The exchange around Android 16's repair request reveals how deeply the future timeline has scarred Trunks' worldview. To him, every android is a potential mass murderer. His refusal to help 16 is not cruelty but self-preservation instinct honed through years of apocalyptic survival. Krillin's counterargument is equally valid: this is not that future, and these are not those androids.

This tension mirrors a broader theme of the Cell Saga, which constantly asks whether the future is fixed or changeable. Trunks came back specifically to alter history, yet he struggles to accept altered versions of the enemies he grew up fighting. His character arc here is learning to distinguish between justified caution and fear-driven prejudice, a lesson embodied by the gentle Android 16 who only wants to protect the nature he loves.

Episode 166 serves as a transitional installment that bridges the intense combat of the Perfect Cell Saga with the buildup to the Cell Games. The anime expands considerably on the manga, which jumps almost immediately from Krillin rescuing Android 16 to Cell constructing his arena. The animated version fills this gap with rich character interactions at Capsule Corporation that the manga never explored.

Master Roshi's retelling of tournament history contains several notable dialogue errors in the Funimation dub, including incorrect timelines between tournaments and an inaccurate claim that Goku married Chi-Chi before the 23rd tournament. Cell's methodical arena construction showcases a side of his personality that goes beyond simple villainy. He approaches the preparation with artistic care, cutting stone blocks with precision. Even in destruction, Cell seeks elegance.