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 16th 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. Vegeta scolds him for his action, saying that he could have destroyed one of the Dragon Balls that they were after. They use their scouters to look for the warrior with the highest power level and the one who killed Raditz, sensing two high power levels together they fly off in their direction.
Yajirobe also learns of the Saiyans' arrival and heads to East City. 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 for him. Yajirobe uses this occasion for profit, telling then that the Z Fighters are his men and will take care of the Saiyans.
Sensing their approaching power, Piccolo and Gohan prepare for the arrival of the Saiyans. They sense another power close by which ends up being Krillin. After a little chat, Vegeta and Nappa arrive at Paprika Wasteland. Recognising Piccolo's voice they determine that he was the one who killed Raditz. Piccolo then finds out from the two that he is in fact a Namekian from the planet Namek. He demands for them to leave the planet or they will die and readies himself in a fighting stance. On The Lookout Kami reflects on the new found information that he is from another world.
Nappa measures the power levels of the three in front of him, mocking their inadequate power level but Vegeta tells him to remove his scouter as the Earthlings are capable of raising their power levels at will. Krillin wonders how they're supposed to beat the two when they even more powerful than Raditz if Goku isn't there but realise they have no choice. On Vegeta's suggestion, Nappa takes a small container out of his armour and plants the seeds in the ground. Suddenly six Saibamen emerge ready to do battle.
- Nappa destroys East City.
- The Z-Warriors meet the Saiyans.
- Nappa plants the Saibamen.
Differences from the manga
- Yajirobe at the aftermath of East City's destruction is exclusive to the anime.
- The news crew filming the confrontation at Paprika Wasteland is exclusive to the anime.
- 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.