Kyouko Sonan

Age: 23

She is an Intelligence Agent for Beauty Salon PRINCE her task is to find and come in contact with possible factor candidates and test their power and skills.
She is always helping Kouichi.
Dislikes the penguin empire because of past events, where it involves her father who apparently got traumatize when the Penguin Empire's performed their very unusual "Front Tail Dancing" which happens to be their custom.

Though, she co pilots the Daimider, she actually serves as a way for Kouichi to boost his "Hi-ERO" energy whenever they're fighting the Penguin Empire's mech, which much to her chagrin because she has already been enduring his constant groping.

(Source: Kenzen Robo Daimidaler Wikia)