Poe

Poes are the spirits of the dead that wander Hyrule field at night and the graveyard behind Kakariko Village in Ocarina of Time. They float and hold lanterns, haunting the areas they choose to haunt. They are very aggressive and will attack any intruders that invade their area. Once one is killed, you can capture it's spirit in a bottle and even sell it on to make some money, or drink it to lose health. In the Forest Temple, they hide in portraits and come out to attack you. Their cackle is hardly bearable.