Ryoko Sakurai

Head Scientist of the Mobile Disaster Response Corps and creator of the Symphogear. She has the ability to form powerful force-fields. She tends to display some sexual tendencies towards Hibiki. Her loyalties are somehow questionable, as she concerns herself more over the Symphogears and armors.

She is soon revealed to be the main antagonist, Finé, who had possessed Ryoko's body long ago to use the power of Kadingir to destroy the moon and bring about chaos on the earth.