Udonna is the wise sorceress of Root Core and the White Mystic Ranger. She also acts as mentor to the Mystic Force Rangers. Udonna is the wife of the Mystic Wizard Leanbow and the mother of Bowen, who would later be known as Nick Russell and the Red Mystic Ranger. Believing her husband was killed during the Great Battle, she lived quietly in Root Core until an earthquake broke the seal that prevented the Morlocks from escaping and she was forced to recruit the Mystic Rangers after losing her ability to morph during a fight with Koragg.