The Darkest Day (んなバカな! 土から生まれたサイバイマン, Nna Baka na!! Tsuchi kara Umareta Saibaiman) is the twenty-second episode of the Vegeta Saga in the uncut Dragon Ball Z series. The episode first aired on October 11, 1989. Its original American air date was July 14, 2005.
The Saiyans, Vegeta and Nappa, defiantly announce their arrival on Earth with the complete destruction of East City. Sensing their power, Piccolo, Gohan and Krillin prepare for the worst and meet the Saiyans face-to-face, where Piccolo learns of his origins on the planet Namek.
Yajirobe also learns of the Saiyans' arrival. A police inspector and journalists watch him surprised and Yajirobe yells and repeats that "It WAS the Saiyans!" The inspector questions what Saiyans are, and Yajirobe answers the question to him. Yajirobe uses this occasion for profit, telling that the Z Fighters are his men and will take care of the Saiyans. Our heroes are left facing an onslaught of sprouted Saibamen under the grinning command of Vegeta and Nappa.
- The Z-Warriors meet the Saiyans.
- Nappa plants the Saibamen.
- In the Japanese version, this was the first episode to feature the 2nd Cha-La Head-Cha-La opening, which FUNimation used for the first 117 episodes of the series.