Roll

Roll is the kind-hearted humanoid robot and the little sister of Mega Man and Proto Man, who is created by Dr. Light and became a house keeper for helping around Light's laboratory by both cleaning and cooking. Sometimes, her dream is to open a hospital and help people in one day. Roll is also one of the few female characters in the entire classic Mega Man series so far, and introduced as the only first female robot before Kalinka, Plum and Splash Woman were orderly appeared through the series.