Kefka stands at the southern end of a maze-like series of pathways through the Narshe snowfields as his soldiers approach Banon standing at the north end. The player must fight their way through the soldiers and defeat Kefka before the imperials reach Banon.
Kefka uses powerful magic, including Blizzara, which is virtually an instant kill against a single character. Cast against the entire party it is not fatal but still very powerful. He also has Poison, Drain, Thunder, Blizzard, and a fairly weak physical attack. If the player brings Celes to the battle she can Runic his magic, rendering much of Kefka's offensive attacks useless. Otherwise Sabin should use Blitz, Edgar should use his Auto Crossbow, Cyan should use Fang, and Gau should use the Stray CatRage or any other powerful Rages the player has acquired. Celes and Terra can use Cure to heal the party and otherwise should cast Fire/Blizzard. Kefka flees at the end of the battle.
General Leo fights Kefka alone in this battle. This is not a true boss fight, however, as it ends in a cinematic scene and Kefka's sprite is unnamed, as well as the fact that the music playing in the background is the standard enemy encounter music and not Decisive Battle, which is used for boss battles. This Kefka has 5,001 HP and still uses powerful magic include Firaga. However, Leo is equipped with an Aegis Shield, which will likely block many of Kefka's spells. With the Shock ability and a Master's Scroll allowing him to attack four times a turn, Leo can inflict over a thousand damage every round and easily defeat Kefka, as long as the player does not fool around.