Bongo Bongo

Bongo Bongo was once a young man who dwelled in the shadow temple. For his affairs with a sheikah, he was transformed into a hideous beast by the King of Hyrule. He is a mysterious creature which guards the mysteries of the Shadow Temple. It is by far the weirdest boss yet to appear in a Zelda game. If you play the game normally, he is the next-to-last Temple boss to cross your path. To defeat him, equip the Lens of Truth, stun his hands with arrows to reveal his giant eye, shoot the eye with another arrow and hack it with your sword. Once you repeat this process enough times, this evil will be no more. The ice arrow will also freeze a hand if hit.

Oddly enough, Bongo Bongo is battled above a giant drum. Not only does he beat on it, but he sings throughout the battle with a voice much like the giants in Termania.

Bongo Bongo, although he cannot be found, does exist while you are Young Link. As revealled when he breaks out of the well, Bongo Bongo haunted the Kakariko Well's chambers until Ganondorf released him after you defeat Morpha. That means, along the whole adventure in the well, there was a possibility (not outside the game, but in the universe of the game) that Link could have had to battle Bongo Bongo!