Guru-Guru is a bald, bearded man who's always seen playing the "Song of Storms" on what looks like an organ grinder. He first appears in Ocarina of Time where he's found inside the Windmill in Kakariko Village, happily playing away.

In the future, he's angry because 7 years ago a young boy played the Song of Storms with a magical ocarina, messing up the windmill. Unaware Link is that same boy, he teaches him the "Song of Storms", and Link returns to the past to fulfill his predetermined destiny, draining the well to access the next dungeon.