LostWinds/Magmok

Speak with Deo for a cutscene. Then...

FIRST AND ONLY BOSS: MAGMOK

This guy has two basic attacks. First, he'll usually slam one of his hands into the ground. When he does, draw a line of slipstream fire to the glob of glorbs on the top of his hand, then jump on top of it, press Z, and gust upwards to pull it out. Repeat this for both hands. Be sure to take care of the glorb that flies out of the glob first; it can stop you from pulling it up. His second attack is to stick his head out and make glorbs fall on the ground. Use this opportunity to slam him with a Vortex using the rock that's on the ground. Once you've taken care of the hands and hit him in the head with a Vortexed rock twice, he'll fall over and reveal a glob on the back of his neck. Slipstream it with fire, then pull it up to completely defeat him!

Well, you didn't really defeat him, but you did remove him from the control of those Glorbs. Afterwards, he'll return Deo's power and after a cutscene...

Congratulations, you've beaten LostWinds!