Storm Rider

The Storm Rider is a gargantuan Heartless boss that Sora fights during Kingdom Hearts II while in The Land of Dragons.

The Storm Rider is a Chinese dragon turned into a Heartless by Xigbar. It can control lightning and thunder, so Thunder magic is useless. It attacks the Imperial city of the Emperor. The vulnerable parts of the Storm Rider are the horns on its head. These two points are how Sora dealt damage and defeated the Heartless.

Journal Entry
"A giant Heartless that appeared in the sky of the Land of Dragons. An intense battle was fought by Sora above the palace."

"Originally a creature that gave strength to the earth and people, it was turned into a Heartless."

Trivia

 * Besides Mushu, the Storm Rider is the only dragon featured in The Land of Dragons. Also, its journal entry described it as a being "that gave strength to and people" prior to becoming a Heartless, in the same way how revered dragons are as symbols of strength and power in China.
 * Sora can grab one of the Storm Rider's horns to avoid being flipped off the dragon
 * When charging Lightning Beam, Storm Rider resembles Bahamut from Final Fantasy X when using Mega Flare.
 * The Storm Rider was a dragon that was turned into a heartless, however it has an emblem suggesting that it was artificially made.