Gleeok (Phantom Hourglass)

Gleeok, Two-Headed Dragon is the boss of the Temple of Ice in The Legend of Zelda: Phantom Hourglass.

Strategy
He is defeated with the Grappling Hook and Oshus's Sword. To defeat it, Link must make a rope with his Grappling Hook to where a fireball or iceball hits the opposing dragon's head 3 times each which shatters its armor. After the their armor is shattered, they will stick out their tongues. If you leave a tongue alone for too long Gleeok will unleash a powerful fire or ice beam. Link can use his Grappling Hook to make a rope that sticks to a pole and Gleeok's tongue. Link will slash his sword at the tongue and repeat the process until both heads are destroyed. After that Link can get the second Pure Metal, "Azurine" and a Heart Container.