Stormbringer

Stormbringer is a lightning Dragon that inhabits the Realm of Oni and Dragons.

Firstbourne
While looking for food, Cole and Wu were attacked by Stormbringer and their baby until they took cover in a cave.

The Weakest Link
When Stormbringer flew by, the Ninja try to restrain her enough to let Wu ride them. He did, but fell off when they broke free.

Season 9: Hunted

 * 85. "Firstbourne"
 * 91. "The Weakest Link"
 * 93. "Lessons for a Master"

Abilities
From the first episode, Stormbringer has the power to breathe electricity from its mouth and fly at high speeds, and it looks like Stormbringer is quite agile and fast.