Ultimate Kamehameha! is a move used by SSJ5 Goku. He first charges a Kamehameha. Then the power of the SSJ5 form amplefies the Kamehameha and turns it into an Ultimate Kamehameha. Goku then blasts the power towards the enemy, defeating the enemy.
SPOILER[]
This attack will be Super Saiyan 5 Goku's Ultimate Attack in The Ultimate Video Game.