Appa's armor



Appa's armor was an article of clothing worn by Appa during the Day of Black Sun which managed to protect him from the various attacks of fireballs, spears, and other projectiles. Invented, drafted, and constructed by Sokka, the armor was quite unique and very durable.

History
After Toph began scamming various Fire Nation citizens, Sokka expressed concern that she could end up getting the group in trouble and asked her to be more careful. Toph was unwilling to listen and instead bribed Sokka, who decided to use the money to buy an atlas and fund his budding idea for Appa's armor. Sokka began making the suit of armor during his stay at the Black Cliffs. When Avatar Aang interrupted him, Sokka told the Avatar that he was making it so "[Appa wouldn't] have to go into the invasion naked". He originally built the armor with an Air Nomad insignia engraved on the front of the headpiece, but it was not seen during the Invasion of the Fire Nation when it was finally worn by Appa on the Day of Black Sun. After the invasion was defeated at the Fire Nation Capital, Appa wore it again on the way to the Western Air Temple to ensure his safety.

Design
Appa's armor was made of metal and leather and contained multiple compartments, including a "pocket" to hold smoke bombs and other weapons. There were also two large water barrels on either side, enabling Katara or any other waterbender to bend large amounts of water while safely riding atop the sky bison.