This sound comes from Undertale, the 2015 indie role-playing game by Toby Fox, and is associated with the character Mettaton, a robot entertainer known for dramatic delivery. The "Oh yes" line became popular in meme edits, fandom videos and reaction posts because it communicates instant confidence in less than a second. It still gets used years later thanks to Undertale's lasting online fanbase and Mettaton's very distinctive voice and personality.
About this sound
Mettaton's dramatic "Oh yes" voice clip from Undertale, used in memes, edits and reaction posts when someone wants a flamboyant, overconfident reveal.
This clip features Mettaton from Undertale delivering a sharp, theatrical "Oh yes" in his trademark showman style. It is short, clean and instantly recognizable, with a confident robotic voice that lands like a punchline or glamorous entrance. The sound gives a scene extra flair, turning a simple reveal, smug reaction or self-important moment into something bigger and funnier. Because the line is so concise, creators often use it to cap off a joke, underline a dramatic pose, or sell a knowingly over-the-top attitude.
