15Trunks vs. Perfect Cell (3 episodes)
With Vegeta getting his way and Cell reaching his Perfect form, the time-traveling Trunks was forced to do battle with an enemy far out of his league. Nevertheless, the youngster bravely stepped up to the plate, having recently improved his Super Saiyan form
in the Hyperbolic Time Chamber.
Unfortunately, the hero’s regular blonde-haired power is lacking and so Trunks proudly reveals a new transformation that he had kept hidden from his father so as not to make him feel outdone. Trunks’ beefed-up Super Saiyan Third Grade form is certainly strong – perhaps even tough enough to take down Cell – but the additional muscle weight reduces his speed so greatly, Cell still comes out on top.
Trunks soon realized that he hadn’t surpassed his father after all; Vegeta had known that a balance of strength and speed was needed to beat Cell and that bulking up came at too high a price.