Skull Kid (mini-boss)

The Skull Kid is a mini-boss from The Legend of Zelda: Twilight Princess. He is an unnamed member of the Skull Kid race, and is therefore referred to purely as "Skull Kid". He is encountered on two occasions in the game, and although he never directly attacks Link, he does summon Puppets to do his dirty work for him.

The Skull Kid is first encountered in the Sacred Grove, where he leads Link to the resting place of the Master Sword. Instead of acting purely as a guide, however, the Skull Kid instead plays a game of hide-and-seek with Link as they travel. Link must find him several times before he leads him to the Master Sword.

When Link returns to the Sacred Grove later in the game, the Skull Kid will help him navigate the area once again. This time he leads him to the Temple of Time. Once again he plays a dangerous game of hide-and-seek with Link, but on this encounter he is much more difficult to find.

In order for Link to find the Skull Kid he must either look for the light of his lantern and/or listen for the sound of his horn playing Saria's Song.

Theories
The fact that the Skull Kid knows Saria's Song has led many to believe that he may be the same as or an ancestor of the Skull Kid from The Legend of Zelda: Ocarina of Time and The Legend of Zelda: Majora's Mask.