The Friend Kamehameha (友人かめはめ波, Yūjin Kamehameha; lit. "Friend Kamehameha") is a Multiple Kamehameha used by Goten and Trunks in the movie Dragon Ball Z: Bio Broly. It is Goten and Trunks both firing a Kamehameha together at the same time.
Trunks and Goten first attempt to use the attack in their base form, to destroy Bio-Broly before he is released from his Bio-Chamber, but Bio-Broly breaks free from the Bio-Chamber before Trunks and Goten can launch their attack. They use it a second time against Bio-Broly, in their Super Saiyan forms, and make contact but Goten stops firing it and leaves in an attempt to save Mr. Satan from the Culture Fluid, but Bio-Broly stops him with a Mouth Energy Wave and starts beating Trunks. Goten and Trunks use it a third time alongside Krillin to knock sea water onto the Culture Fluid.
Appearances in games
Goten, Trunks, and Future Trunks use their 3 Kamehameha in conjunction to defeat Super Perfect Cell in Dragon Ball Z: Shin Budokai. Goku and Vegeta use it again in the game finale to finish off Super Janemba (who had absorbed a fake Vegito and Majin Buu to increase his power). In promotional movies for Dragon Ball Heroes, the Saiyan Hero Beat and the Saiyan Heroine Note perform a Friend Kamehameha while fighting Frieza's soldiers.
In Dragon Ball: Xenoverse, during the normal ending of the Demon God Demigra Saga Super Saiyan 3 Goku and Future Warrior combine their two Super Kamehamehas to counter Demon God Démigra's desperate final attack resulting in an Energy Clash between their Friend Kamehameha and Demigra's attack, though in the end Demigra is overcome by the power of their attack and destroyed. SSJ3 Goku and the Future Warrior's Friend Kamehameha is so powerful that not only does it destroy Demigra but also has enough power to damage the Crack of Time.
- This attack is part of Trunks' first Kamehameha on-screen usage.