Garada K7, seen always with Doublas M2(whom she acted like a big sister to), was one of the main reccuring enemies of Robot Girls Z. She and Doublas continuously assisted Baron Ashura in her allways failing plans to steal Photon Energy. As the series goes on, she gets more accustomed to her defeat. In the manga its hinted that she had a crush on Grenda-San.
In the end, however, she, Doublas and Ashura help both teams of Robot Girls Team T and Z defeat their common enemy, Mycene-Tan.