What is "iroh"

Iroh is a fictional character in Nickelodeon's animated television series Avatar: The Last Airbender. Created by Michael Dante DiMartino and Bryan Konietzko, the character was voiced by Mako Iwamatsu in season one and season two and, due to Mako's death, by Greg Baldwin, in season three and the sequel series The Legend of Korra.

A retired General of the Fire Nation, a nation whose Benders utilize the element of fire, Iroh is the elder brother of Fire Lord Ozai. Though he accompanied his exiled nephew Zuko on his quest to capture Aang in order to restore the young prince's honor and birthright, Iroh wanted to help his nephew become a better person than his father.

In the episode " Tales of Ba Sing Se", Iroh's name was written as 艾洛 (aì lùo) and was dedicated "In Honor of Mako".