The Crystal Jiggy is a legendary and powerful Jiggy that is used by Jiggywiggy to open up the worlds in Banjo-Tooie and Banjo-Kazooie: Grunty's Revenge. If Banjo and Kazooie visit Jiggywiggy with the required amount of Jiggies, he will ask them to complete a puzzle for him in a certain amount of time. If they finish the puzzle within the time limit, Jiggwiggy uses the Crystal Jiggy's power to open up the new level.