Xiombarg, also known as the Queen of the Swords, is a Chaos Lord. She prefers to appear as a beautiful young woman but is sometimes referred to with the male pronoun (making a pun of her title Queen of the Swords). She is prone to shapeshifting and carries a giant sword. In Stormbringer (book), she rides a creature with the head of a lion and the body of a bull. In Corum's world, she is one of the three Sword Rulers.
Though she prefers the form of a beautiful woman, it is noted that during her fight with Elric, she began to transform, possibly due to loss in concentration, and became markedly more insect like over time.