Punpun is the stark, bird-like protagonist of Inio Asano's manga Goodnight Punpun, a melancholic coming-of-age story where his blank face makes him easy to remix. The .exe suffix comes from the creepypasta tradition kicked off by Sonic.exe, in which familiar characters are recast as corrupted killers in fake haunted games. Punpun.exe edits mix his innocent design with glitch art and horror audio, and short jumpscare stingers like this one spread through meme soundboards, Discord servers and editing communities as a quick way to fake a haunted-game scare, in the same rotation as any classic scream meme.