Guard captain

The Guard Captain was a slightly incompetent Fire Nation soldier in charge of security at the Fire Days Festival. He was not a Firebender and had never seen battle; in fact, he was only actually assigned this cushy job because his father had a friend who owed him a favor. He was always proud to report to his higher-ups how well the festival was doing.

History
Aang, Katara, and Sokka decided to attend the Fire Days Festival, a traveling street fair taking place in Fire Nation cities and towns, including the colonies situated in former Earth Kingdom territory. Due to the fact that its participants wore stylized hand-carved wooden masks similar to that of Kabuki theater masks, the gang was able to wander around unnoticed. They attended a Firebending show, where Katara was picked out as a volunteer by the performer Malu. Aang then blew their cover by Airbending away the performer's fire dragon that was headed straight for Katara. The gang was forced to flee the scene when Fire Nation soldiers realized that Aang was the Avatar. They were aided in their escape by Chey, who threw a grenade, setting off the fireworks. A string of lanterns caught in Appa's tail set fire to a giant torch in the middle of the village as they flew away.

Afterwards, the Guard Captain was required to answer to Admiral Zhao for letting the Avatar escape. To avert attention from his failure, he told the admiral that the festival had gone off without a hitch and that the local crime rate was reduced. Angrily, Zhao snapped that he wasn't interested, and the Guard Captain directed the admiral toward the forest and predicted that the Avatar had likely escaped up the river.

His ultimate fate after the War is unknown.