Fiber is one of Neos' four generals (referred to as the Shiten'nou (四天王, Shitennō) in Japanese). She uses her sharp nails for weapons in close combat, and controls her victims like marionettes. She is also the first opponent faced and defeated in battle by Iczer-3, who taunts her by calling her an "old lady", an insult that infuriates her. When she returns to Neos to beg for another chance, Neos uses her as an example and disposes of her on the spot.