"The Tales of Ba Sing Se" is the 15th episode of the of the animated television series ', and the 35th episode overall. The episode, directed by Ethan Spaulding, originally aired on Nickelodeon on September 29, 2006. It features six short vignettes of several of the series's main characters as they go about a day in the city of Ba Sing Se. The episode constitutes a break from the previous more serious, plot-heavy episodes, and instead focuses on character development; the main plot of the season is advanced only in one of the six vignettes, the tale of the winged lemur .
The first tale, written by Joann Estoesta and Lisa Wahlander, is of and Toph, who spend a day at the spa. The sage yet comedic Iroh's tale is next, written by Andrew Huebner; he helps various residents of Ba Sing Se, before making a tearful tribute to his son, who died in combat trying to conquer the city. Aang helps a zookeeper, though not without causing some trouble (written by Gary Scheppke). Sokka inadvertently enters a haiku contest (written by Lauren MacMullan). The generally brooding Zuko goes on a date (written by Katie Mattila). The last tale, written by Justin Ridge and Giancarlo Volpe, centers on Momo, who searches for Aang's lost pet skybison, .
"The Tales of Ba Sing Se" received widespread acclaim from critics, with reviewers considering it to be one of the series' best episodes. "The Tale of Iroh" has been especially well-reviewed and is a fan favorite. The episode was dedicated to Iroh's voice actor, Mako Iwamatsu, who died before the episode's airing.
"The Tales of Ba Sing Se" received widespread acclaim from critics, with "The Tale of Iroh" being particularly highlighted, and is considered by critics and fans alike to be one of the best episodes of Avatar.
The Daily Dot reviewed it as the "best episode of Avatar", noting that it is a much-needed break in an otherwise dark period of the series. The episode falls in the middle of the protagonist's search for the skybison Appa, and provided character building in a lighter atmosphere. The Daily Dot picked Zuko, Momo, and Iroh's tales as the best, noting that Iroh's was "especially memorable". Iroh is often a comedic relief to the brooding Zuko, but the Daily Dot noted this episode provides another, more emotional side of Iroh. The episode also explains why Iroh is going to such great lengths to try to save his nephew Zuko, so that he will not die in war like his son did.
CBR noted that "The Tales of Ba Sing Se" was an example of the great filler episodes in Avatar, and a departure from the generally bland filler episodes in many television shows. CBR especially praised Iroh's tribute to his son as an example of Avatars character building, and described it as "the most touching and memorable tale".
The Mary Sue described the episode as highly emotional.