Joo Dee is an official of Ba Sing Se, once serving as a caretaker and tour guide for Aang and his companions after their arrival in the city. She served as Supreme Bureaucratic Administrator to the city, a position created after the Fire Nation's invasion. This position was likely abolished after the Order of the White Lotus took back the city.
Joo Dee first appears to be a stereotypically vapid and ignorant tour guide, despite the fact that Sokka has information regarding the war against the Fire Nation, she constantly "handles" the entire group into following her tour, promising them audience with the Earth King of Ba Sing Se within six to eight weeks. She always wears a creepy smile and is made to seem somewhat eerie. When Aang and the group go searching for Appa and information dealing with the war on the Fire Nation, Joo Dee hangs back from the others, ever-smiling. When Sokka asks a question that gets close to the truth, Joo Dee will smile broadly and shake her head at the person under interrogation, which elicits a withdrawn, scared reaction from them. When Aang and the group crash the Earth King's party in a botched attempt to alert him of the solar eclipse that causes Firebenders to lose their bending power, Joo Dee urges them to leave before they are caught; but when Aang is exposed as the Avatar, her perpetual smile melts into something closer to hopeless despair.A room full of Joo Dees. After meeting with Long Feng, Aang and company are to be escorted home by Joo Dee, but they are shocked to see that a different woman with the same name and eerie smile who claims to be Joo Dee has taken the place of the Joo Dee they first met. This suggests that the totalitarian government of Ba Sing Se has covered up all traces of the original woman's existence because she failed at escorting the Avatar properly. The original 'Joo Dee' reappears in 'Lake Laogai', claiming her disappearance was because she took a holiday at the lake. However, after her efforts to prevent Aang and his friends from searching for Appa fail, she is seen distraught before Long Feng, one of the few times she shows emotion. Long Feng is then seen hypnotising her. Later it is revealed that the Dai Li brainwashes many women into becoming Joo Dees.
It's unknown what happened to the girls who were under the control of the Dai Li. It's possible that the effect of the Dai Li's brainwashing abilities wore off and they started a new life as normal people.
- Joo Dee is not their real names.