Izumi

Izumi is Fire Lord of the Fire Nation, daughter of Lord Zuko, and mother of General Iroh. She ascended the throne in 167 AG following her father's abdication.

Early life
Izumi was born a Princess of the Fire Nation to Fire Lord Zuko following the Hundred Year War. At some point during her life, Izumi had a son named Iroh, whom she named after her father's uncle. As Crown Princess of the Fire Nation, Izumi ascended to the throne as Fire Lord following Lord Zuko's abdication in 167 AG.

Diplomatic ventures
Following the anarchy in the Earth Kingdom in 171 AG, Izumi and the other world leaders tasked Kuvira with restoring order to the ravaged nation, granting her temporarily the position of interim president until the Earth Kingdom was stabilized enough for Prince Wu's return and restoration to the Earth Kingdom throne.

Three years later, Izumi traveled to Republic City in her official capacity as Fire Lord to attend Prince Wu's coronation as the fifty-fourth Earth King. There, she witnessed Kuvira denounce Wu's authority and dissolve the Earth Kingdom in favor of the Earth Empire under her own rule. Izumi and the other world leaders convened after the coronation and agreed to send Suyin Beifong as their representative to speak with Kuvira and convince the metalbender to step down.

Trivia

 * Izumi is the first known female Fire Lord.