In order, these are the people who know how to use the Kamehameha: Master Roshi, Goku, Yamcha, Krillin, Tien,Gohan,Cell, and Gotenks (Including Trunks and Goten fused). Created by Master Roshi, it took 50 years to master and Goku learned it by just watching Master Roshi perform it for the Ox King to save his village from a fire. It is used throughout the whole entire series, and the 2 series, Dragon Ball Z And GT after it. Kamehameha, or "Turtle Shockwave" In japanese, is another name for the energy blast created in the anime/manga Dragon Ball.