Tortured Lockjaw is a character from The Return to Freddy's, a fan-made horror series inspired by Five Nights at Freddy's, and this growl comes from its fifth instalment. The series built a following among FNAF fans who share its animatronic sounds for edits, memes and gameplay videos. Because the growl is short, distorted and instantly unsettling, it has travelled beyond the game itself onto soundboards, where horror creators reuse it as a FNAF jumpscare sound whenever they need a quick, menacing creature noise.