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In th year 20XX, Dr. Thomas Light, a Noble Peace Prize winning Professor in the field ofRobotics, creates a series of 6 revolutionary robots called the i-Robot Master series in an effort to use the robotics as a mean to better mankind. As a personal effect, Dr. Light creates 2 androids named Roll (a female) and Rock (a male) who are made to be as human as possible fromappearance and behavior.