Kreia, the Dancing Blademaster

When Kreia was a little girl, she and her family were among many individuals abducted by a mind flayer colony. Her position far from the central colony kept her away from the fighting when adventurers raided the colony to wipe out the mind flayers and free the prisoners. Maimed by the forced labor, the little one-armed girl was taken back to the surface and adopted by one of her rescuers when it was discovered her parents had not survived. Her ordeal hardened something in the little girl and she promised herself that when she grew up, she would be able to take care of herself and help others too.
She and her foster parent later discovered that her subjugation by the mind flayers had awakened latent psionic abilities in Kreia. She proved to be extremely adept at telekinesis and soon mastered using this skill to move a prosthetic arm naturally. From there she learned to control multiple objects, namely swords. As she trained and later became an adventurer herself, Kreia developed a reputation carrying and using an entire adventuring party's worth of weapons single-handedly. Each of her swords is made from a different material to cover the weaknesses of different monsters; swords of pure iron, silver, adamantine, and numerous magical blades.
Kreia only met the Headhunters briefly, overseeing their Trial of the Elements and very nearly taking off one of Kiri's fingers when the lecherous adventurer thought he could get away with harassing her. During the guild's battles with the Morlocks, she found herself on the front lines using her telekinetic swords to cut through hordes of their minions in a tornado of blades. She even managed to take down one of their Void Beasts single-handedly. After the war, she stepped up into more of a leadership role to help the guild and country rebuild from Levira's rampage.