It appears as a large man wearing bulky European Armor.
This is the Charyeok of Moon Gi-Joo. It enhances his fighting ability and he can use many high level attacks. Ironically his Charyeok was the owner of his National Treasure, Walmung. Enhanced Attacks: All of Moon Gi-Joo's attack are greatly enhanced with even one slash being capable of leveling a city block.
Healing: Moon Gi-Joo has shown the ability to heal others, shown when he healed Yu Mi-Ra's injury.
Lightning: Moon Gi-Joo has the ability to summon a ball of lightning which he uses to blind his enemies.