First, Goku puts his hands out at his left and right sides. Then, he discharges a blazing aura as he fires two Kamehameha energy waves out of each hand at the opponents, inflicting a huge amount of damage.
Usage and Power
Goku first uses this attack during his battle against final form Frieza on Namek. When Frieza attempts to sneak up behind Goku from a mountain, Goku senses Frieza and blasts him with the Double Kamehameha.
Later, Goku also uses a Double Kamehameha during the first round of his fight against Baby Vegeta, but Baby quickly dodges the attack.
In Dragon Ball Z: The Tree of Might, Goku later uses this attack against two of Turles' henchmen, Cacao and Daiz. When Gohan has been forcibly transformed into a Great Ape by Turles, Goku rushes to help Gohan, only to be interrupted by Cacao and Daiz's combined attack. However, Goku blocks the attack with an energy shield and flies up into the air to attack Cacao and Daiz with the Double Kamehameha, blasting them away down into the ground.