Ook

Ook is the baboon boss of the monkeys from The Legend of Zelda: Twilight Princess. He carries the Gale Boomerang, and like the monkeys, lives in the Forest Temple. Some time before Link enters the Forest Temple, Ook was taken control of by a large parasitic creature resembling a Twilit Parasite that latched to his head, leading him to ally with monsters and attack and imprison the other monkeys.

Link first encounters Ook in a room of the Forest Temple. Here, Ook halts Link's progress by using the Gale Boomerang to cut down a large bridge leading to his lair. Ook then taunts Link by slapping his rear at him.

Soon after, Link encounters Ook again in a large room full of totem poles, and a miniboss battle ensues. Ook leaps between the tops of the poles, occasionally stopping to throw the boomerang at Link or some Baba Serpents on the ceiling, cutting the latter down to fight Link. To damage Ook, Link needs to bash into a pole after Ook has thrown the boomerang, disorienting him enough that the returning weapon knocks him off the pole, causing him to land with his rear upwards. From hear, Link can damage him by attacking his buttocks, but he will get up and resume shortly after.

After enough hits, a disoriented Ook stumbles around and accidentally bangs his head against a pole, crushing and knocking off the parasite. Having regained his senses, Ook notices Link and flees in terror, leaving the Gale Boomerang behind. Ook makes a final appearance to assist Link during the boss fight against Diababa by swinging across the room while carrying Bomblings for him to use.