Gohan wins in a fight between him and Bojack in "Dragon Ball Z: Bojack Unbound." In the middle of the battle, it appears that Bojack has won, but Goku intervenes and Gohan defeats Bojack.
The fight between Gohan and Bojack is the final fight of the movie. It involves villains Bojack, Zangya, Kogu, Bujin and Bido and heroes Gohan, Future Trunks, Vegeta, Piccolo, Yamcha, Tien and briefly Goku. When Gohan is the last hero fighting, he finally transforms into Super Saiyan 2 with help from his father Goku. Gohan gains the power to kill his lesser enemies with one energy blast. He follows his Super Kamehameha and punches Bojack straight through the stomach, killing him.