Zuko tells the healer that Iroh's name is "Mushi," which causes Iroh to glare at him because "mushi" translates to "insect" - not a very manly name.
The voice of Moku is provided by Derek Basco, the older brother the voice actor for Zuko, Dante Basco.
The story of the two lovers is drawn in the style of traditional ink brush painting.
Song is based on one of the character designers, and she is wearing a type of traditional Korean outfit called a hanbok.
The writing on the tomb is written in seal script, a form of Chinese writing that is 2,000 years old.