First, Perfect Cell cups his hands to his side and charges a Super Kamehameha. Then, he charges it with much more energy than usual. Lastly, he fires the beam in the form of a humongous energy wave, inflicting an enormous amount of damage.
Perfect Cell uses this attack in a desperate attempt to destroy the Earth while battling Super Saiyan 2Gohan. After Gohan easily decimates Perfect Cell in the battlefield, Perfect Cell uses his Destructo Disc, Special Beam Cannon, and Rapid Fire techniques, but they all do not affect Gohan in the slightest. In one final attempt to win the battle, Perfect Cell charges the Earth-Destroying Kamehameha, implying that if Gohan dodges the attack, the Earth would be destroyed (hence the name). However, the young Saiyan counters the beam with a Kamehameha of his own, easily overpowering Perfect Cell's attack and destroying most of his body.
Appearances in games
This attack was named Earth-Destroying Kamehameha in Dragon Ball Z: Ultimate Tenkaichi, where it is Perfect Cell's Ultimate Attack.