Jailer

The Jailer is a Fire Nation soldier who uses a Firebending staff as his primary weapon. He is notable for having an eye-patch, and for being the jailer responsible for Lian while she was imprisoned in the Earth Kingdom. He battles Team Avatar in an attempt to prevent them from successfully breaking out of prison along with Lian. He is a highly skilled Firebender, whose main attacks are basic fire blasts and lines of fire. He is defeated by Aang when the young Airbender ran around him repeatedly, only attacking when the Jailer took it upon himself to rest.