The clip takes its name from Goku, the hero of Dragon Ball, and from epico papus, a piece of Spanish internet slang used between friends to call something epic. Rather than coming from a single well-documented scene, it circulates online as a short viral reaction sound, passed between meme pages, edits and gaming clips where the joke depends on recognising both references at once. That mix of anime fandom and casual Spanish slang is why it keeps appearing in short-form videos, where a four-second burst of hype fits a punchline better than a longer quote.