Human Extinction Attack (人類絶滅攻撃) is an energy wave barrage used by Super Buu. Super Buu raises his hand up in the air and charges a pink aura around his body. Then, he fires a massive barrage of pink energy waves up into the air to rain down on the opponent, inflicting a huge amount of damage.
Super Buu used this attack to kill every single human being on Earth. Only Tien Shinhan and Chiaotzu were fast enough to dodge the blasts and escaped from death, and Mr. Satan and Bee were spared due to the friendly Majin Buu's influence.
Human Extinction Attack appeared in the Budokai Tenkaichi series and is one of Super Buu's Blast 2 attacks. It was first named "Extermination of Mankind Blasts" in Dragon Ball Z: Budokai Tenkaichi, but was later named, "Genocide Blast" in Dragon Ball Z: Budokai Tenkaichi 2 and 3. In Dragon Ball Z: Shin Budokai and Infinite World, it is named "Assault Rain" and is only used by Kid Buu. It later returns in the Dragon Ball: Raging Blast series and is used by Super Buu as one of his Super Attacks