Zuko Alone is the best episode of Avatar
you mean The Tales of Ba Sing Se
Tales of Ba Sing Se is definitely up there. Iroh’s short is a classic. But takes as a whole, I’d say the tone is a bit disjointed. None of the other shorts offer that much.
Zuko Alone is poignant and deep all the way through. Isolating Zuko and showing his past is a fantastic way to develop his character and help the audience understand his thought processes and how he became the person he is. It’s an excellent character study episode.