The sound comes from Piggy: TROI Reimagined, a fan take on the Piggy horror universe where Penny appears in a darker Demon Dweller form. Clips of her scream were lifted from gameplay and shared on soundboards and short video edits, separate from the full game audio. Because Piggy already mixes cute characters with horror, this version of Penny became an easy shorthand for corrupted or possessed moments. Editors keep reusing the shriek because it is instantly recognisable to Piggy fans while still working as a generic scare for anyone else.