Kaio Ken comes from Dragon Ball, created by Akira Toriyama, where Goku learns the technique from King Kai during his training before the Saiyan battle on Earth. In Japanese Kaio means King Kai, and the move multiplies Goku's strength and speed at great physical strain. The shouted name became a signature moment in the anime adaptation that began in 1989. Clips of the call spread through anime edits, forums and soundboards, and it now sits alongside other anime power moments like Mangekyo Sharingan in meme collections.