Ook

Ook (ウーク, Uuku) is the miniboss of the Forest Temple in The Legend of Zelda: Twilight Princess. He is first seen when he cuts down a bridge across a chasm with the Gale Boomerang in the Forest Temple. Later when Link enters his chamber, he will start spanking his bottom mocking him, and then the battle begins. Dodging his boomerang is easy, but getting him down from the pillars that he jumps around on is a bit harder. After he throws his boomerang, Link must dodge it then ram the pillar he is standing on. He will start to lose his balance and then get knocked off the pillar by his own boomerang when it comes back. Once downed, his bottom becomes vulnerable. After slashing at him a couple of times, he will start to cut down some Baba Serpents down to attack Link. Once he is defeated, it is revealed that a gigantic mite on his head was controlling him. Defeating him will also yield the Gale Boomerang. After the battle, Ook will turn good and later returns to help Link in fighting the dungeon's boss, Diababa, by swinging across the screen carrying bomblings for Link to use against Diababa.

Trivia

 * It is possible that the yook in Phantom Hourglass are based on Ook, thus the similarity in name and appearance. Both also fight against Link at one point, but later become helpful.