|"Your suspicions are confirmed. The Earth King's army now marches toward Yu Dao."|
|— General Mak to Fire Lord Zuko.|
General Mak was a general in the Fire Nation military following the Hundred Year War. At the time of the crisis in Yu Dao, he was stationed in the Fire Nation Capital as a military aide to Fire Lord Zuko.
After Zuko withdrew from the Harmony Restoration Movement, he sent spies to the Earth Kingdom, who reported to General Mak. The spies informed the general that Earth King Kuei's forces were marching toward Yu Dao, and he passed this information on to the Fire Lord, which prompted Zuko to sail with a fleet of several warships toward the colony.