Dragon Ball Z (1989)

S5E22 Vegeta Must Pay

Confident that Cell has finally become the opponent he craves, Vegeta throws himself into battle, eager to test the monster's full power. However, his smug satisfaction quickly evaporates as Cell effortlessly swats away every attack the Saiyan Prince launches. It becomes painfully obvious that Vegeta has wildly underestimated his foe, and the fight is far from the one-sided triumph he envisioned.