Dean Kitagawa - One of the Main Protagonists. He was disowned after his family found out he was part of the Task Squad 589 (not knowing they were the "Good Guys"). He pilots the S01-Arthur.
Nine Oikawa - One of the Main Protagonists. She followed Dean because she can't leave him alone. She also joined the Task Squad 589. She later becomes the main love interest of Dean, even ending up as his implied girlfriend in the 10th Episode. She pilots the S03-Guinevere.
Shirley Kitagawa - A cheerful, yet kind normal girl. She has a dream of becoming a wonderful Pilot like her brother, Dean. She pilots the R03-Vivid and the R04-Dhaos. She also piloted their variants.