Goku’s Kamehameha

"He?!" Master Roshi pondered for a moment, then chuckled meaningfully as he looked at He-El. "If it were you, I'd believe you had already learned my Kamehameha." Goku was only eleven, just a little kid. It was not that Master Roshi looked down on Goku. Rather, he had fought He-El and witnessed his unimaginable learning ability. He-El had directly learned the Ten Thousand Nations Shocking Palm from him, a technique even more difficult than the Kamehameha.