Her wealthy father Hikari Daitokuji.
B-ko Daitokuji (大徳寺美子 Daitokuji Biiko) is a childhood nemesis of the main duo. She is in love with C-ko but A-ko always seemed to be better liked. She develops robots to fight on her behalf (or an enhanced suit of power armor). She is very rich and has a gang of 4 friends.