Susie is one of the main characters in Deltarune, the episodic role-playing game created by Toby Fox and first released in 2018. Like other characters in the game, she does not have full voice acting, so her personality is conveyed through written dialogue accompanied by a distinctive typing sound. Fans extracted that sound for soundboards and editing libraries as chapters were shared online and fan works multiplied. It remains popular because players associate the blip immediately with Susie, making it useful shorthand in remixes, parodies and fan-made scenes.