Sans is a skeleton character from Undertale, the 2015 role-playing game by Toby Fox, and his sudden appearances and disappearances became a signature part of his laid-back but unsettling presence. Short sounds tied to those moments circulated as clips and memes long after the game's release, especially in edits that play on his ability to catch players off guard. The teleport blip remains popular because it instantly signals a character who was never quite where you expected.