Frau Koujiro is a brilliant and eccentric character from the anime series Robotics;Notes. Known for her expertise in programming and hacking, she plays a crucial role in the story as a member of the Robotics Club. Frau is the creator of the popular online game 'Kill Ballad,' which becomes an integral part of the plot. Despite her reclusive and socially awkward nature, she is a loyal friend and a valuable asset to the team. Her quirky personality and unique skills add depth to her character, making her a fan favorite in the series.