Bold and Fearless (ハッタリじゃねえぞ!! 大胆素敵な奴·孫悟空, Hattari ja ne zo!! Daitan Suteki na Yatsu Son Goku) is the fifteenth episode of the Frieza Saga and the ninetieth overall episode in the uncut Dragon Ball Z series. The episode first aired on May 15, 1991. Its original American air date was October 11, 1999.
Frieza, after failing to defeat Goku using only his feet, offers Goku one last chance to join him or die. Goku understandably refuses, and Frieza reveals that he has been holding back, as Goku has. Frieza then drops the bombshell by revealing that he has actually been using a mere 1% of his power the entire time. Foolishly believing Frieza to be bluffing, Goku allows him to power up to 50% of his maximum power.
Captain Ginyu, in Bulma's body, speeds across Namek on Bulma's motorcycle, with Bulma trapped in the Namekian Frog's body and hanging dangerously onto the bike. Ginyu eventually finds Gohan, Krillin and Piccolo witnessing the battle between Goku and Frieza, and joins them. Obviously, they believe Ginyu to be Bulma having stumbled across them, but given Bulma's strange mannerisms and the presence of the Namekian Frog, Krillin and Gohan begin to believe something is wrong. Meanwhile, on Earth, Chi-Chi, Master Roshi, Yajirobe, Puar and Oolong prepare to depart for Namek to retrieve Gohan, but the Capsule Corporation spaceship malfunctions before taking off.
Frieza quickly finishes his powering up, and makes good on his word by turning the tables on Goku and dominating him completely. King Kai, Tien Shinhan, Yamcha and Chiaotzu sense this from King Kai's planet. Tien remains confident that Goku can win with the Kaio-Ken attack, but King Kai spoils the surprise by telling them that Goku has been using the Kaio-ken 20x the whole time.
Ginyu delights at seeing Goku lose, inadvertently blowing his cover. As Piccolo threatens him, Ginyu spreads his arms out.
- Goku vs. Frieza (1% Final Form)
- Goku vs. Frieza (50% Final Form)
- Captain Ginyu, in Bulma's body, claimed he could sense the fighting powers of both Goku and Frieza. However, it is never explained how Bulma managed to acquire the ki sensing ability, nor is she ever shown again using it.
- King Kai states that even if Goku was 100x stronger while using the Kaio-ken, he would still be no match for Frieza, yet he easily goes on to dominate Frieza as a Super Saiyan, which is said to boost Goku's power 50x. King Kai might be not talking about the power of Kaio-ken but its side effect which could kill Goku before he gets the chance to kill Frieza or because he was just exaggerating.