From the city-state of Radz-at-Han, Jalzahn is an alchemist by trade. He has long worked to recreate the arms of the Zodiac Braves, legendary weapons thought to be laden with soul energy. Upon learning that Thavnairian mist, a potion of his own concoction, was being used for soul infusion in Eorzea, he made the long journey to the realm. There, he met with the Warrior of Light and Gerolt, and together they set out to forge anew the Zodiac Weapons. Though Jalzahn and the weaponsmith bicker often, they have developed a grudging respect for each other.
Now having seen seventy-three winters come and go, Jalzahn delights in distilling fiery liquors. The Hyuran once had a family as well, though it appears that they left him—the high price of his obsession with research.