Sprunki is a fan-made mod of the music mixing game Incredibox that spread widely online in 2024, adding original characters who each add a beat, melody or effect. Raddy is one of the red, spiky characters, and in the mod's hidden horror phase his cheerful design turns unsettling and his sound becomes distorted. Clips isolating that moment began circulating as standalone scare sounds, in the same tradition as the FNAF jumpscare scream, and are now reused in fan edits, prank videos and short horror memes far beyond gameplay footage.