Dock/Xu/Bushi

"fire"

- My name's Dock. Mind if I ask who you are?" "I'm not Dock, I'm Xu. Dock's my brother." "Alright, I'm Bushi! Let's get some river cleaning done.

Dock/Xu/Bushi was a villager who seems to be suffering from dissociative identity disorder (split personality) and lived in the small fishing village of Jang Hui, situated right next to a Fire Nation factory which was polluting the water of the village. His mental state was likely due to drinking the polluted water.

History
Mainly one person, Dock ferried people across the water and operated the docks, which he said is where he got his name from. His other personality, Xu, which he claimed to be his twin brother, operated the village fish market. He introduced a third personality at the end of the episode, which he said was his brother Bushi. Each of his personalities were distinguished by the hat that they wore. When Aang and his friends were getting ready to clean the lake, they asked if Dock would like to help. He said no thanks but that he would get his other brother Bushi, who he said loved cleaning rivers. He changed his hat right in front of Aang and his friends; though when Aang told him that he finally caught him, he became confused and said that he had no idea what he was talking about. Finally he seemed to catch on and said that his brother Dock was crazy and pretended to be other people, only infuriating Aang more.

According to Dock, Xu was a real blabbermouth, and his third personality, Bushi, claimed that his brother Dock was crazy. What the brothers thought about Bushi is unknown.

His ultimate fate after the War is unknown.

Trivia

 * Sometime later, Aang is seen wearing the same hat Xu wore as the shopkeeper.
 * In the end credits, the name for Dock/Xu/Bushi is just Dock. This could prove that his real name may be Dock.
 * The closed captioning uses Shoe instead of Xu due to the show's creators thinking that Westerners might not know how to pronounce Xu.
 * The name Bushi may be derived from the Chinese word Bushi(不適) which means "unwell". This is a fitting reference to him being mentally unwell.