Family Kamehameha (親子三大かめはめ波 Oyako Sandai Kamehameha, lit. "Parent and Child Triple Great Kamehame Wave") is a more powerful version of the Bros. Kamehameha used by Goku, Gohan, and Goten in their Super Saiyan forms.
Gohan and Goten fire a combined Kamehameha at the opponent, who struggles against the attack. With the Dragon Balls in place, Goten wishes Goku was there. Thus, the spirit of their father Goku descends beside his two sons and transforms into his Super Saiyan form. Finally, Goku fires his Kamehameha as he, Gohan and Goten charge more power into the combined attack, overpowering the opponent and inflicting a huge amount of damage.
Usage and Power
Goku, Gohan, and Goten use this attack against Legendary Super Saiyan Broly, who attacks with the Omega Blaster in Dragon Ball Z: Broly - Second Coming. Though they manage to combat Broly in the Energy Clash, Broly fires more energy spheres into his attack to blast it forward. As Broly prepares to destroy the Earth, an awakened Trunks fires his energy sphere at the Omega Blaster, preventing Broly from powering up his attack and causing it to weaken. Seeing their chance, Goku, Gohan, and Goten release all of their power into the Family Kamehameha. The attack makes Broly's Ki Blasts explode and breaks through Broly's Omega Blaster, blasting the Legendary Super Saiyan into the Sun.
Video Game Appearances
In Dragon Ball Z: Supersonic Warriors 2, the Family Kamehameha is performed like the Father-Son Kamehameha, with only Goku and Teen Gohan. In this same game, if Super Saiyan 3 Gotenks is in the team while Goku and Adult Gohan perform the Ultimate Kamehameha, Goten will also appear and shoot his own Kamehameha too.
Goku, Gohan, and Goten can also use this attack in Dragon Ball Z: W Bakuretsu Impact and Dragon Ball Heroes, in Dragon Ball Heroes their GT versions can also use the attack, made up of a 10x Kamehameha, a Super Kamehameha, and a Super Kamekameha.
In Dragon Ball Z: Dokkan Battle, it appears as an Active Skill for Goku, Gohan, and Goten.
In Dragon Ball FighterZ, Adult Gohan's Bros. Kamehameha will become the Family Kamehameha if Super Saiyan Goku is on the same team and hasn't been knocked out, as well if Gotenks is not in Gohan's team, as Goten will otherwise be unavailable due to being fused. Also, the scene of it's use from Broly - Second Coming is recreated in a Dramatic Finish. The only difference is that after blasting Broly into the Sun, Goku is still present and all three family members share a fist bump.