Fire Lord Iroh

Iroh was the firstborn son of  Fire Lord Azulon, but when the time to choose his successor came, Iroh let his brother Ozai become Fire Lord, as he was grieving the death of his only son, Lu Ten, in the siege of Ba Sing Se. It was believed that Iroh killed off the last of their world's  dragons, earning him the title "Dragon of the West", but it was later revealed that he was secretly the dragons' pupil, and thus learned from them to derive his Firebending powers from vitality rather than the conventional rage. He became a Grand-Lotus (high-ranking member) of the international secret society of philosophers, teachers, and warriors known as the  Order of the White Lotus.

History
When the story begins in Book One, Iroh is shown accompanying the banished Prince Zuko in his search for the Avatar, a superhuman whose task to maintain world order made him a threat to the Fire Nation's campaign. Upon discovering the Avatar, Iroh accompanied Zuko. Having learnt of Zhao's plan to kill the moon spirit to cancel Waterbending, disrupting the natural order, Iroh attacks Zhao and is subsequently named a traitor.

During Book Two, he and his nephew are now fugitives from the Fire Nation. After being gravely wounded by his niece Azula and healed by his nephew, Iroh teaches Zuko a Waterbending-inspired technique of absorbing and redirecting lightning.Iroh eventually takes refuge in the Earth capital Ba Sing Se, where he and Zuko operate a tea-house. Iroh is dismayed when Azula convinces her brother to betray them and is arrested while covering Aang and Katara's escape from the conquered city.

In Book Three, held in a Fire Nation prison, Iroh fakes despair while preparing himself for the solar eclipse, during which Firebending does not work.Prior to the eclipse, Iroh reveals to Zuko that he is descended from Avatar Roku through his mother. Once the eclipse begins, Iroh easily escapes prison, described as being a one-man army even without his bending.In the series finale, Iroh is revealed to have called the White Lotus to reveal themselves and liberate Ba Sing Se. Upon being reunited with Zuko, Iroh tells him to become the new Firelord. Soon after Zuko's crowning as Firelord, Iroh takes residence in a new tea shop in Ba Sing Se; the final scenes of the series take place in that tea shop.

In the comic book sequel The Promise, Iroh offers Aang and Zuko advice on the Harmony Restoration Movement. He also reveals a new culinary invention—bubble tea—which Aang and Zuko do not enjoy. Iroh muses he is a man before his time. In The Search, Iroh returns to his birthright as Firelord while Zuko and Team Avatar locate Zuko's mother Ursa. Bored with his new title, he uses his authority to declare a National Tea Appreciation Day.

In the sequel series The Legend of Korra, Iroh is revealed to have used a form of astral projection at the time of his death to become a resident of the Spirit World. In the episode "A New Spiritual Age", Iroh comes to the aid of Aang's reincarnation, Avatar Korra, who had been trapped unprepared deep in the Spirit World. He set her on the right path and welcomed her to visit him anytime, in any of her lifetimes. In "Darkness Falls", having known them in life, Iroh encounters Aang's children Tenzin, Kya, and Bumi when they enter the Spirit World and provides them with hints as to the location of the spirit of Tenzin's daughter Jinora. Korra again encounters Iroh in "The Ultimatum," when she enters the Spirit World in search of Zaheer. Korra explains to Iroh that she is confused and doesn't know how to deal with the threat Zaheer poses to both the newly reformed Air Nation and the world. Iroh suggests that Korra seek Zuko's counsel, as Aang once did.

Zuko's grandson is named Iroh and is a general of the United Forces, the armed services of the United Republic of Nations.

Training
Power in Firebending comes from the breath not the muscle. The breath becomes energy in the body the energy extends past your limbs and becomes fire.

Students

 * 1) Fire Lord Zuko
 * 2) Avatar Korra