Sprunki began as a fan-made mod of the music game Incredibox and spread widely online in 2024 through Scratch, YouTube and TikTok. Its key twist is a horror phase that transforms the colorful beatbox characters into distorted, injured versions with darker sounds. Raddy, one of the original beat characters, becomes especially striking in that phase. Pyramixed is one of the many remix variants that reworks the characters and loops, and clips of its horror Raddy sound are now shared in edits, remixes and fan phases.