Mongke

"fire"

- If you're surprised we're here, then the Dragon of the West has lost a few steps.

Colonel Mongke was the leader of a Fire Nation military group known as the Rough Rhinos; he was the sole firebender of the group. His quick wits and ruthless tactics made him a formidable opponent.

Background
Mongke once served under General Iroh in the Fire Nation Army. At some point, Mongke became the leader of the Rough Rhinos. Shortly thereafter, he and the group were responsible for the deaths of Jet's parents and the destruction of their village.

Encountering the Avatar
Colonel Mongke encountered Avatar Aang and his friends at their campsite. The Rough Rhinos attempted to kidnap the Avatar, however, their raid was unsuccessful.

That evening, the Rough Rhinos, attempted to claim the Earth Kingdom's Chin Village in the name of Fire Lord Ozai. Mongke and his fellow warriors were defeated in combat once again by Avatar Aang and his friends.

Meeting Iroh and Zuko
The Rough Rhinos ambushed Iroh and Prince Zuko, seeking to apprehend them for their traitorous actions. While Iroh appeared happy to see them, even complimenting their singing abilities, Mongke was unmoved and ordered his group to arrest the fugitives. After a brief battle, Zuko and Iroh managed to escape.

Abilities
Colonel Mongke was a capable firebender and a tough opponent to defeat, especially when fighting alongside the other Rough Rhinos. He was a good tactician and had a knack for singling out weaker Earth Kingdom towns. At one point, he nearly captured the Avatar. Mongke and the rest of the Rough Rhinos were also said to be capable singers.

Trivia

 * His name seems to reflect a Mongolian influence. "Mongke" is the name of Genghis Khan's grandson and means "eternal", which makes sense given that Khan himself has been seen as a destructive warmonger.
 * It has been said that Mongke enjoys jasmine tea.