Isinn

Isinn is one of the six Giant Automaths responsible for descending from the Towering Fortress and Awakening the Giants on the First Day. Isinn represents the militant and cunning Fire Giants, and is third from the top of The Ordning.
  Isinn had several key responsibilities on the First Day. First, she built a gargantuan Forge, which she used as a kiln to temper the Giants themselves after they had been carved by Lotning. This tempering would harden the Giants outside and in, preparing them for a difficult life of struggles against foes unlike any ever faced previously by Giantkind. Second, Isinn forged the great gong rung by Threk, which Awakened and animated the Giants. Third, after they were Awakened and Vald challenged the champions of each of the Giant clans in turn to mortal combat, she saw that his makeshift weapon failed him during his battle with the Frost Giant champion, and suggested he use a better weapon if he hoped to defeat the next three foes. She forged for him Dauðafæri, a greatsword, which which he was able to defeat the next three Giant champions. Yet all the while she watched, noting how Vald seemed to win through pure brute strength and fury, and knew that she would be able to defeat him. So, she forged for herself an axe and called it Drekakló. Her long years of studying the ways of war served her well, for she was able to decisively defeat Vald, maintaining her place in the Ordning.
  Isinn is depicted as a massive female Fire Giant, with skin like iron and hair like flame. In one hand she wields Drekakló, her axe, and in the other the great Forgehammer. Her tactics and prowess in battle are revered among all giants (if begrudgingly so by Frost Giants), and her skills of forgecraft are valued immensely in Giant society.
  Priests and Clerics of Isinn practice the domains of War, the Forge, and the Light the burning forge-fires emanate.