From Dragon Ball Encyclopedia, the ''Dragon Ball'' wiki
First, Super Saiyan 2 Gohan charges up an incredible amount of energy so that the golden aura around his body keeps flashing. Next, he brings his cupped hands to his side and charges a golden-yellow Kamehameha. Finally, Super Saiyan 2 Gohan brings his hands forward and fires the attack with the flashing light emanating from his body at his opponent, inflicting a high amount of damage and even creating a mushroom cloud in its wake.
Dragon Ball Z
Super Saiyan 2 Gohan used this attack in an attempt to destroy Majin Boo's Cocoon. Wanting to protect the people he cared about from Majin Boo, Super Saiyan 2 Gohan rejected East Kaio's order to retreat and attacked Majin Boo's Cocoon with the Flashing Kamehameha. As the smoke cleared, however, the cocoon appeared to be unaffected by the attack. He then fired several Flashing Kamehameha at the cocoon, but could not inflict any damage. He instead blasted the cocoon up into the air. Super Saiyan 2 Gohan tried one more time to destroy it with a Super Flashing Kamehameha, but once again the attempt failed.
Dragon Ball Z: Buu's Fury
It is named Electric Kamehameha in Dragon Ball Z: Buu's Fury. Enemies hit by the attack can become electrically charged.
Tenkaichi and Raging Blast series
It is named Super Kamehameha in the Budokai Tenkaichi video game series and the Raging Blast video game series and is Gohan's Ultimate Blast in his Super Saiyan 2 form and one of Ultimate Gohan's Blast 2. The color has changed to blue.
- Super Flashing Kamehameha – An enhanced version of the Flashing Kamehameha that Gohan used to try and destroy Majin Boo's Cocoon. It still proved to have no effect, however, as the cocoon hatched and released Majin Boo.