"You fool! Any last words before you die?!"
As he says "This will finish you off!" or "Let's end this!", Bojack puts his hands together in front of himself and charges a large, green energy sphere. Then, he spreads his arms out at his sides, splitting the single sphere into two, and finally throws his hands downward to fire the energy spheres in the form of two energy waves at the opponent, inflicting a massive amount of damage.
Bojack uses this attack in a last resort attempt to kill Super Saiyan 2 Gohan, but Gohan counterattacks with the Super Kamehameha. The two energy waves clash in a massive explosion and both of the fighters rush through to attack. In the blinding light, Gohan ultimately kills Bojack with one final punch and wins the fight.
Appearances in games
Galactic Buster appears in the form of a single, large energy wave in Dragon Ball Z: Super Butōden 2 and the Budokai Tenkaichi series. The technique looks more like the Grand Smasher he launched at Super Saiyan 2 Gohan in Dragon Ball: Raging Blast 2, Dragon Ball Heroes, and Dragon Ball Z: Dokkan Battle.