Roronoa Zoro is one of the main swordsmen in One Piece, the manga by Eiichiro Oda that began in 1997 and the anime adaptation that followed in 1999. Short voice clips of the Straw Hat crew have circulated for years in fan edits, and Zoro's laugh became a standalone reaction sound on meme pages and messaging apps. Its popularity comes from instant recognition among fans, letting a single second of audio stand in for smug amusement without showing the character or explaining the reference to other viewers who know the series well.