Sans is a skeleton character from Undertale, the role playing game released by Toby Fox in 2015. In the game each major character has a short text blip voice, and Sans uses a deeper version that reflects his laid back delivery and his connection to the Comic Sans font. As Undertale fan games, animations and Megalovania memes spread online, his speech sound became shorthand for the character himself. It remains popular because players instantly associate the blips with his jokes, warnings and sudden shifts in tone.