The voice belongs to Maximillion Pegasus, the flamboyant creator of Duel Monsters and early antagonist in Yu-Gi-Oh, whose theatrical English dub delivery made many of his lines quotable. Short clips of his reactions circulated among anime fans and meme editors, who repurposed the exclamation as a compact reaction to shock, defeat and thwarted schemes. It remains in use because the single word is instantly recognisable, easy to drop over gameplay, duels and everyday fails, and carries the character's villainous flair without needing context.