Argorok

Argarok is the boss of the City in the Sky, Twilight Princess's seventh dungeon. Argorok is an armored, fire-breathing dragon that is sighted throughout the level and destroys certain bridges.

To defeat Argorok, use your Double Clawshot to climb up the pillars until you are close to the top and then clawshot onto its tail. Once you have caught on to it put on your iron boots and the dragon will fall to the ground. Every time you do this it will lose some of its armor and after a few times it will roar and shake of the rest of it. Now we move into the second part of battle. Use your double clawshot and climb to the top of the pillars and use your clawshot on a peahat. Argarok wil breath fire so keep changing to another peahat (make sure you're not wearing the zora armor because if you are hit the fire will take about 8 hearts. After he breathes fire, Argarok will stop for a little while so clawshot until you are in back of him and manually aim your claw shot onto his back and then use your sword just like you did on Morpheel. After a few times he will fall down and die and you can claim your final mirror shard.