Kuei

The Earth King is the ruler of Ba Sing Se. Although he does not excersize much rule beyond the city, he has power to influence the entire Earth Kingdom, as Ba Sing Se is the headquarters of the Earth Kingdom military and government. First seen in City of Walls and Secrets, the Earth King appeared often during the last episodes of Book 2, and fled Ba Sing Se with the Avatar after the coup by the Dai Li.

The Earth King is a humbled, simple man with little concern and no knowledge of the War, as he was brainwashed previously by Long Feng. In this manner, the Earth King is merely a puppet designed to give the people a sense of rightful leadership. His most loyal pet is Bosko, a bear, whom he keeps with him most of the time (and seems to be his only real companion). It is unknown whether the Earth King is an Earthbender, but because of his lack of fighting during the coup, it can be assumed that the royal family is not of Bending capability as many other monarchial titles in the Avatar world are (such as Fire Lord).

The Avatar and his allies, Katara and Sokka of the Southern Water Tribe, and Toph Bei Fong, launched an attack on the Earth King's palace in The Earth King, battling past the Dai Li and the Earth King's royal guards. After getting to the King's throne room, the foursome told the King about the War and Long Feng's treachery. At first, the King did not believe them, but after the Avatar showed the King Appa's bite on Long Feng's leg, the King agreed to go with Aang and co. to see if their statements were true.

The four first took the King to Lake Laogai where the Dai Li secret headquarters used to have been. However, the Dai Li had already destroyed their base, and the Earth King remained sceptical of the childrens' efforts, encouraged by Long Feng. Aang then took the Earth King to the Outer Wall, showing him the Drill, a massive Fire Nation was machine. The Earth King then ordered that the Dai Li arrest Long Feng. They obeyed, and Long Feng was taken prisoner from crimes agianst the Earth Kingdom.

Later, in The Guru, the Earth King stays in Ba Sing Se with Katara while Aang, Sokka, and Toph depart to the East. During a Council of Five war meeting on the invasion of the Fire Nation on the Day of Black Sun, while the Earth King is in his chambers with the Kyoshi Warriors, he is attacked by one of them and taken prisoner. Katara rushes in to find out that the "WarriorS" are none other than Azula, Ty Lee, and Mai, the Fire Nation princess and her consorts. Azula threatens to kill the Earth King with lightning, and Ty Lee knocks out Katara. The Earth King is thrown into a cell deep within the catacombs while Long Feng reveals his treacherous alliance with the Fire Nation.

When Sokka and Toph return to rescue the Earth King, they too are captured. However, Toph uses Earthbending to get them out of the Dai Li prison while Aang and Iroh rescue Katara and Zuko in the crystal catacombs. Toph and Sokka prepare to evacuate the city with the Earth King, as the Dai Li are launching a coup, but the Earth King refuses to leave without Bosko. Toph and Sokka face Ty Lee and Mai in a battle and win, and take Bosko. The Earth King, his pet, and the two children flee Ba Sing Se, but not before picking up an injured Katara and Aang, who fought against Azula, the Dai Li, and Zuko (who turned to Azula's side in the end). As the quintet leave Ba Sing Se, the Earth King remarks, sadly, "The Earth Kingdom...has fallen."