King Bumi
King Bumi is the King of the city of Omashu. He is the only one of Aang's old friends who is still alive before Aang froze himself and is over 100 years old. Despite his age, he is still in peak condition and one of the most powerful earthbenders in the world.
After Aang and friends caused a commotion in Omashu, they were brought to him who gave them a feast. He traps Sokka and Katara and forces Aang to complete challenges that force him to think outside the box. After a duel with Aang, he forces Aang to guess his name and Aang realizes who he is.